WO2017054448A1

WO2017054448A1 - Data transmission method, and method and device for confirming receipt of data

Info

Publication number: WO2017054448A1
Application number: PCT/CN2016/080881
Authority: WO
Inventors: 杜振国; 丁志明; 禄彼得
Original assignee: 华为技术有限公司
Priority date: 2015-09-30
Filing date: 2016-05-03
Publication date: 2017-04-06
Also published as: CN108028836A; CN108028836B

Abstract

Disclosed are a data transmission method, and a method and device for confirming receipt of data for solving a problem in which a receiving end requires huge overheads for transmission confirmation and encounters difficulty in performing confirmation when media access control protocol data units (MPDUs) of an aggregate media access control protocol data unit (A-MPDU) have multiple traffic identifiers (TIDs) and/or a portion of the MPDUs are fragmented. The data transmission method comprises: allocating, by a transmitting end, temporary sequence numbers to respective MPDUs included in an A-MPDU, wherein any two MPDUs of the A-MPDU have different temporary sequence numbers, at least two MPDUs of the A-MPDU have different TIDs, and/or at least one MPDU is fragmented; and transmitting, by the transmitting end, the A-MPDU allocated with the temporary sequence numbers.

Description

Data transmission method, data reception confirmation method and device

Technical field

The present invention relates to the field of communications technologies, and in particular, to a data transmission method, a data reception confirmation method, and an apparatus.

Background technique

In Wireless Wireless Local Area Network (WLAN) based on Wireless Fidelity (WiFi), the receiving end usually uses Block Acknowledge (BA) frame pair to transmit one or more aggregated MPDUs from the transmitting end (Aggregate MPDU). , A-MPDU; MPDU: MAC Protocol Data Unit, MAC Protocol Data Unit; MAC: Medium Access Control, Media Access Control.

A-MPDU is a MAC layer aggregation transmission mechanism proposed in 802.11n, and is widely used in 802.11ac. Prior to this, there was only one MPDU in each frame. In the A-MPDU, multiple MPDUs may be included, and each MPDU may belong to different frame types, or may have different source addresses (Source addresses, SAs) or destination addresses (Destination Addresses, DAs), but all MPDUs have the same The receiving address, that is, all MPDUs in one A-MPDU are sent to the same receiving device, but it is not excluded that multiple MPDUs of the same A-MPDU are sent to different receiving devices. At the same time, all MPDUs in the same A-MPDU have the same Traffic Identifier (TID), that is, all MPDUs belong to the same flow (Traffic). Compared with the transmission mode in which multiple frames are transmitted and each frame contains one MPDU, the A-MPDU reduces the interframe space, channel contention time, and physical head repetition transmission, thereby effectively improving transmission efficiency.

When the receiving end receives an A-MPDU that is sent to itself for immediate confirmation, that is, when the Ack policy in the MPDU is set to an implicit block confirmation request (implicit BAR), a reply to the sender is returned. (Block Ack, BA) frame, the BA frame contains a block acknowledgment bit table (BA Bitmap), and each bit of its BA Bitmap corresponds to one MPDU in the A-MPDU. Due to one The A-MPDU allows a maximum of 64 MPDUs to be aggregated, so the length of the BA Bitmap is fixed at 64 bits. The specific design of the BA frame has a variety of variants. As shown in Figure 1, between the A-MPDU and the BA frame, the sender may also need to send a Block Acknowledge Request (BAR) frame, that is, the sender requests the receiver to acknowledge certain MPDUs. In this case, the Ack policy in the MPDU is set to BA. At this time, the receiving end replies to the BA frame when receiving the BAR frame of the transmitting end, instead of immediately replying to the BA frame when receiving the A-MPDU, that is, the transmitting end needs to send The BAR frame triggers the receiver to reply to the BA frame.

In another case, as shown in FIG. 2, the receiving end receives multiple A-MPDUs sent by the sending end, and different A-MPDUs may have different TIDs, and then the receiving end sends a BA frame for confirmation, and the frame includes multiple 64-bit BA Bitmap, each BA Bitmap corresponds to a TID, this BA frame is called multi-TID BA.

In the next-generation standard 802.11ax of 802.11ac, due to the introduction of the uplink (UL) Multiple User (MU) transmission mechanism, including UL OFDMA and UL MU-MIMO, the Access Point (AP) will At the same time, transmission frames of multiple stations (Stations, STAs) are received, and each STA's transmission frame contains an A-MPDU. According to the resolution adopted by the current standard conference, the AP needs to send a multi-STA BA frame (M-BA for short) to reply the confirmation information to multiple STAs. Specifically, the multi-STA BA frame adopts a structure similar to the multi-TID BA in the existing standard.

Figure 3 is a schematic diagram of a structure of a multi-STA BA frame. The multi-STA BA frame includes a plurality of block acknowledgment information (BA Information, abbreviated as BA Info), and each BA information corresponds to one STA, and the STA's identification AID includes In the first 11 bits (B0 to B10) of the first field Per TID Info (called: per TID information) of each BA Info. In addition, an ACK/BA indication is also introduced. When the ACK/BA indication is set to BA, there is a Block Ack Starting Sequence Control field and a BA Bitmap field after the Per TID Info field; when ACK/BA The indication is set to ACK. There is no Block Ack Starting Sequence Control and BA Bitmap field after the Per TID Info field. That is, the current BA Information only contains Per TID Info. The ACK/BA indication is set to ACK in two cases: the A-MPDU received by the device contains only one MPDU and the receiving end correctly solves the MPDU, or the A-MPDU packet received by the device Multiple MPDUs are included and the receiving end correctly resolves all MPDUs in the A-MPDU. In the case of correctly receiving all MPDUs, it is not necessary to separately indicate whether each MPDU is correctly received, so the Block Ack Starting Sequence Control and the BA Bitmap field can be omitted, thereby saving transmission overhead. The multi-STA BA frame also includes a Frame Check Sequence (FCS) field, a Duration/ID field, a Receiving Address (RA) field, and a Transmitting Address (TA). area.

In 802.11ax, recent papers suggest that in order to further improve the efficiency of multi-user transmission, MPDUs containing multiple TIDs in the same A-MPDU should be allowed. We call this A-MPDU a multi-TID A-MPDU. As shown in FIG. 4a, the structure of the multi-TID A-MPDU is shown. If the amount of data to be transmitted by STA2 is much more than that of other STAs, other STAs have to fill in many redundant bits when transmitting, "()" in Figure 4a. The number in the middle indicates the sequence number (SN) of the MPDU included in the subframe, the VO subframe indicates a video (Video) subframe, and the VI subframe indicates a voice (Voice) subframe, wherein one subframe includes an MPDU. The delimiter, MPDU, and padding byte (PAD), the length of the padding byte is usually 0 to 3 bytes, and the purpose of padding the byte is to make the length of the sub-frame an integer multiple of 4 bytes. However, if the A-MPDU is allowed to contain multiple TID data, as shown in FIG. 4b, the MPDUs of different TIDs can be aggregated and transmitted in the same A-MPDU, so that only a small amount of redundant bit filling is needed, thereby improving efficiency. The BE subframe in Figure 4b represents a Best Effort subframe, and the BK subframe represents a Background subframe. The TID of the MPDU included in the subframe of the VO subframe is VO, the TID of the MPDU included in the subframe of the VI subframe is VI, and the TID of the MPDU included in the subframe of the BE subframe is BE, and the BK subframe That is, the TID of the MPDU included in the subframe is BK.

If the receiving end receives an A-MPDU containing multiple TID data, how to confirm it is a problem to be solved.

1) DL MU transmission

The STA receives its own A-MPDU, which contains multiple TID data, and then replies with an acknowledgment. An obvious approach is to use multi-TID BA, where each BA Info corresponds to a TID. However, this will cause a lot of waste. In the aforementioned Multi-TID BA usage scenario, each A-MPDUs may contain 64 MPDUs. Therefore, it is worthwhile for each A-MPDU to correspond to one BA Info (length 12 bytes). However, in the DL MU scenario, although the A-MPDU includes multiple MIDs of the TID, the sum of the MPDUs of the different TIDs does not exceed 64, that is, the number of MPDUs per TID is much less than 64. Therefore, each TID corresponds to a BA Info is a great waste.

2) UL MU transmission

The AP receives multiple A-MPDUs that are sent by multiple STAs in the UL MU mode. At least one A-MPDU includes multiple MIDs of the TID, and then the AP replies to the acknowledgement frame by M-BA or by OFDMA BA. The so-called OFDMA BA, that is, the AP replies to the acknowledgment message separately to each STA in the DL OFDMA mode. For an A-MPDU containing multiple TID MPDUs, an obvious reply mode is to use the multi-TID BA frame for confirmation, and the AP will face The same waste problem in DL MU. The M-BA means that the AP replies the acknowledgment messages of multiple STAs in one BA frame for reply. A simple combination method according to the prior art can obtain the acknowledgment mode of expanding the Multi-TID BA frame format. Each of the BA Infos corresponds to an <AID, TID>, and an AID (Association Identifier), that is, an association identifier of the STA, which is used to identify the STA, and the TID is a flow identifier. As shown in FIG. 5, the M-BA frame structure is schematic. . This method has the same waste problem as the multi-TID confirmation of the DL MU, because the sum of the MPDUs of all the TIDs corresponding to the same AID does not exceed 64. For example, in FIG. 5, AID1 corresponds to TID 2 and TID 3, and AID2 corresponds to TID1 and TID3. TID2 is associated with TID4 and AID3, and one BA Info for each TID is a great waste.

It can be seen that regardless of the UL MU or the DL MU, when the receiving end replies to a multi-TID A-MPDU, there is a great waste of using one BA Info per TID.

In addition, if an MPDU in an A-MPDU contains fragments and some do not, it is difficult for the receiving end to confirm these MPDUs and fragments simultaneously with a BA Bitmap, because in this case, the BA Bitmap is required. Some bits correspond to MPDUs, and some bits correspond to fragments, which is difficult to implement in current standards. An obvious solution is to separately acknowledge the receiving end with different BA Info in the BA frame. Further, if the A-MPDU contains both MPDUs of different TIDs, and some MPDUs also contain fragments, in this case Confirmation will face two difficulties at the same time, namely more The problem of acknowledgment overhead was caused by the MPDUs of the TIDs, and the difficulty of confirming the MPDUs and the shards of the shards, which need to be further solved.

Summary of the invention

The embodiment of the present invention provides a data sending method, a data receiving and confirming method, and a device, where the receiving end performs confirmation when the MPDU including the plurality of TIDs in the A-MPDU and/or the part of the MPDUs included in the A-MPDU are fragmented. The problem of large transmission overhead and difficulty in identification.

The specific technical solutions provided by the embodiments of the present invention are as follows:

In a first aspect, a data sending method is provided, including:

The sending end respectively configures a temporary sequence number of each medium access control protocol data unit MPDU included in the aggregated medium access control protocol data unit A-MPDU, and the temporary serial number of any two MPDUs included in the A-MPDU is not The same, wherein the flow identifiers TID of at least two MPDUs in the A-MPDU are different, and/or at least one MPDU includes a fragment;

The sending end sends the A-MPDU after configuring the temporary sequence number.

With reference to the first aspect, in a first possible implementation manner, the sending end separately configures a temporary sequence number of each medium access control protocol data unit MPDU included in the aggregated medium access control protocol data unit A-MPDU, include:

The transmitting end carries a corresponding temporary serial number in each MPDU included in the A-MPDU; or

The transmitting end carries a corresponding temporary sequence number in each MPDU except the first MPDU of the A-MPDU, where the first MPDU does not carry a temporary sequence number, and the first MPDU The corresponding temporary serial number is a predefined value.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner, the temporary sequence number is located in a media access control MAC header of the MPDU, or is located at an MPDU delimitation of the MPDU. In the symbol, or in the CCMP header of the MPDU.

With reference to the second possible implementation manner of the first aspect, in a third possible implementation manner, the temporary sequence number is located in a high efficiency HE control field in the MAC header of the MPDU, or a bit The quality of service QoS control field in the MAC header of the MPDU, or in the frame control domain in the MAC header of the MPDU, or in the sequence control domain in the MAC header of the MPDU.

With reference to any one of the first aspect to the third possible implementation manner, in the fourth possible implementation manner, the A-MPDU further carries a temporary sequence number existence indication, where the temporary serial number existence indication is used Indicates whether the temporary serial number exists.

With reference to the fourth possible implementation of the first aspect, in a fifth possible implementation, the temporary sequence number presence indication is located in a physical header of the A-MPDU; or

The temporary sequence number presence indication is located in an MPDU delimiter corresponding to each MPDU included in the A-MPDU; or

The temporary sequence number presence indication is located in a media access control MAC header of each MPDU included in the A-MPDU; or

The temporary sequence number presence indication is located in a CCMP header of each MPDU included in the A-MPDU.

With reference to the fifth possible implementation manner of the foregoing aspect, in a sixth possible implementation manner, the temporary sequence number presence indicates a high efficiency HE control domain located in a MAC header of the MPDU, or is located in the MPDU The quality of service QoS control field in the MAC header, or in the frame control domain in the MAC header of the MPDU.

With reference to the first aspect to the sixth possible implementation, in a seventh possible implementation, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where the first ESI is used Identifies the current interaction sequence.

With reference to the seventh possible implementation of the first aspect, in an eighth possible implementation, the first ESI is located in a frame control domain of each MPDU in the A-MPDU, or is located in the A-MPDU. a quality of service QoS control field for each MPDU, or a high efficiency HE control field for each of the MPDUs in the A-MPDU, or an MPDU delimiter corresponding to each of the MPDUs in the A-MPDU Medium, or located in the physical layer PHY header of the A-MPDU.

With reference to any one of the first aspect to the sixth possible implementation manner, in the ninth possible implementation manner, after the sending end sends the A-MPDU after configuring the temporary sequence number, the The method also includes:

The transmitting end receives a block acknowledgement BA frame, where the BA frame includes a block acknowledgement information field corresponding to the sender, the block acknowledgement information field includes a block acknowledgement bit table subfield, and the block acknowledgement information domain Included in the first sequence number type indication, the first sequence number type indication is used to indicate that each bit of the block acknowledgment bit table subfield corresponds to a temporary sequence number of one MPDU in the A-MPDU;

The transmitting end determines, according to the value of each bit in the sub-field of the block acknowledgment bit table, whether the MPDU corresponding to the temporary sequence number corresponding to each bit is correctly received.

With reference to the ninth possible implementation manner of the first aspect, in a tenth possible implementation manner, the sending end determines, according to a value of each bit in the block acknowledgment bit table subfield, that each bit corresponds to Whether the MPDU corresponding to the temporary serial number is correctly received, including:

Determining, by the sending end, the temporary sequence corresponding to each bit according to the stored correspondence between the temporary sequence number of each MPDU and the sequence number and the value of each bit in the block acknowledgment bit table subfield Whether the corresponding MPDU of the number is received correctly.

With reference to the ninth possible implementation of the first aspect, in an eleventh possible implementation, the block acknowledgment information field further includes a start sequence control subfield, where the start sequence control subfield includes And a start temporary sequence number, where the start temporary sequence number is used to indicate a temporary sequence number of the MPDU corresponding to the first bit in the block acknowledgement bit table subfield.

With reference to the eleventh possible implementation manner of the first aspect, in a twelfth possible implementation, the first sequence number type indication is located in a fragment number subfield in the start sequence control subfield Or, located in the per-identity identification information sub-domain of the block acknowledgment information field.

With reference to the twelfth possible implementation manner of the first aspect, in the thirteenth possible implementation, the per-flow identification information sub-domain includes a flow identifier, where the first serial number type indicates the flow The identifier, when the flow identifier is a predefined value, indicates that the start sequence control subfield in the block acknowledgement information field includes a start temporary sequence number.

With reference to any one of the ninth to thirteenth possible implementation manners of the first aspect, in the fourteenth possible implementation manner, each MPDU included in the A-MPDU carries the first intersection a mutual sequence identifier ESI, the first ESI is used to identify a current interaction sequence;

The BA frame carries a second interaction sequence identifier ESI, the second ESI is used to identify a current interaction sequence, and the second ESI is the same as the value of the first ESI.

With reference to the fourteenth possible implementation manner of the first aspect, in a fifteenth possible implementation, the second ESI is located in a per-flow identification information sub-domain in the block acknowledgement information field, or is located The block confirms the start sequence control subfield in the information field.

In conjunction with the fourteenth possible implementation of the first aspect, in a sixteenth possible implementation, the second ESI is located in a block acknowledgement control field of the BA frame.

With reference to any one of the ninth to thirteenth possible implementation manners of the first aspect, in the seventeenth possible implementation manner, after the sending end sends the A-MPDU, the sending end receives the BA Before the frame, the method further includes:

The transmitting end sends a block acknowledge request BAR frame.

With reference to the seventeenth possible implementation manner of the first aspect, in the eighteenth possible implementation, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where the first ESI Used to identify the current interaction sequence;

The third ESI is carried in the BAR frame, and the third ESI is used to identify a current interaction sequence, and the third ESI is the same as the value of the first ESI.

With the eighteenth possible implementation manner of the first aspect, in a nineteenth possible implementation, the BAR frame includes a block acknowledgement request information field corresponding to the receiving end, where the third ESI is located Each stream identification information subfield or block acknowledgment request start sequence number control subfield in the block acknowledgment information field.

In conjunction with the eighteenth possible implementation of the first aspect, in a twentieth possible implementation, the BAR frame includes a BAR control region, and the third ESI is located in the BAR control region.

With reference to any one of the eighteenth to the twentieth possible implementation manners of the first aspect, in the twenty-first possible implementation manner, the second frame number type indication is further carried in the BAR frame, The second sequence number type indication is used to indicate whether the third ESI is included in the BAR frame.

In conjunction with the twenty-first possible implementation of the first aspect, in the twenty-second possible implementation In the mode, the second sequence number type indication is located in a BAR control domain of the BAR frame, or is located in a block acknowledgement request information field corresponding to the receiving end included in the BAR frame.

In a second aspect, a data receiving confirmation method is provided, including:

The receiving end receives the aggregated medium access control protocol data unit A-MPDU sent by the sending end, and each medium access control protocol data unit MPDU included in the A-MPDU is respectively configured with a corresponding temporary serial number, where the A- The temporary sequence numbers of any two MPDUs included in the MPDU are different. The flow identifiers TID of at least two MPDUs in the A-MPDU are different, and/or at least one MPDU includes a fragment.

The receiving end sends a block acknowledgement BA frame, where the BA frame includes a block acknowledgement information field corresponding to the sending end, the block acknowledgement information field includes a block acknowledgement bit table subfield, and the block acknowledgement information domain The first sequence number type indication is included, and the first sequence number type indication is used to indicate that each bit of the block acknowledgement bit table subfield corresponds to a temporary sequence number of one MPDU in the A-MPDU.

With reference to the second aspect, in a first possible implementation manner, each media access control protocol data unit MPDU included in the A-MPDU is configured with a corresponding temporary sequence number, specifically:

Each MPDU included in the A-MPDU carries a corresponding temporary serial number; or

Each MPDU except the first MPDU of the A-MPDU carries a temporary sequence number, the first MPDU does not carry a temporary sequence number, and the temporary sequence number corresponding to the first MPDU is pre- Define the value.

With reference to the first possible implementation manner of the second aspect, in a second possible implementation manner, the temporary sequence number is located in a media access control MAC header of the MPDU, or is located at an MPDU delimitation of the MPDU. In the symbol, or in the CCMP header of the MPDU.

With reference to the second possible implementation of the second aspect, in a third possible implementation, the temporary sequence number is located in a high-efficiency HE control domain in the MAC header of the MPDU, or is located in the MAC of the MPDU. The quality of service QoS control field in the header, either in the frame control domain in the MAC header of the MPDU or in the sequence control domain in the MAC header of the MPDU.

Combining any of the second aspect to the third possible implementation, in the fourth possible In an implementation manner, the A-MPDU further carries a temporary sequence number presence indication, where the temporary sequence number presence indication is used to indicate whether the temporary sequence number exists.

With reference to the fourth possible implementation of the second aspect, in a fifth possible implementation, the temporary sequence number presence indication is located in a physical header of the A-MPDU; or

With reference to the fifth possible implementation manner of the second aspect, in a sixth possible implementation manner, the temporary sequence number presence indicates a high efficiency HE control domain located in a MAC header of the MPDU, or is located in the MPDU The quality of service QoS control field in the MAC header, or in the frame control domain in the MAC header of the MPDU.

With reference to any one of the second aspect to the sixth possible implementation, in a seventh possible implementation, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where The first ESI is used to identify the current interaction sequence.

With reference to the seventh possible implementation of the second aspect, in an eighth possible implementation, the first ESI is located in a frame control domain of each MPDU in the A-MPDU, or is located in the A-MPDU. a quality of service QoS control field for each MPDU, or a high efficiency HE control field for each of the MPDUs in the A-MPDU, or an MPDU delimiter corresponding to each of the MPDUs in the A-MPDU Medium, or located in the physical layer PHY header of the A-MPDU.

With reference to any one of the second aspect to the sixth possible implementation, in a ninth possible implementation, the block acknowledgment information field further includes a start sequence control subfield, where the start sequence control The subfield includes a starting temporary sequence number, and the starting temporary sequence number is used to indicate a temporary sequence number of the MPDU corresponding to the first bit in the block acknowledgement bit table subfield.

In conjunction with the ninth possible implementation of the second aspect, in a tenth possible implementation manner, The first sequence number type indication is located in a fragment number subfield of the start sequence control subfield, or is located in each stream identification information subfield in the block acknowledgement information field.

With reference to the tenth possible implementation manner of the foregoing aspect, in the eleventh possible implementation manner, the per-flow identification information sub-domain includes a flow identifier, where the first serial number type indication is the flow identifier And when the flow identifier is a predefined value, indicating that the start sequence control subfield in the block acknowledgement information field includes a start temporary sequence number.

With reference to the ninth or the tenth possible implementation manner of the foregoing aspect, in the twelfth possible implementation, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where The first ESI is used to identify the current interaction sequence;

The second ESI is used to identify the current interaction sequence, and the second ESI is the same as the value of the first ESI.

In conjunction with the twelfth possible implementation of the second aspect, in a thirteenth possible implementation, the second ESI is located in a per-flow identification information sub-domain in the block acknowledgement information field, or is located The block confirms the start sequence control subfield in the information field.

In conjunction with the twelfth possible implementation of the second aspect, in a fourteenth possible implementation, the second ESI is located in a block acknowledgement control field of the BA frame.

With reference to the second aspect, in a fifteenth possible implementation manner, after the receiving end receives the A-MPDU, and before sending the BA frame, the method further includes:

The receiving end receives a block acknowledgement request BAR frame sent by the sending end.

With reference to the fifteenth possible implementation of the second aspect, in a sixteenth possible implementation, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where the first ESI Used to identify the current interaction sequence;

The BA frame carries a second interaction sequence identifier ESI, where the second ESI is used to identify a current interaction sequence;

The third ESI is carried in the BAR frame, and the third ESI is used to identify a current interaction sequence, and the third ESI has the same value as the first ESI and the second ESI.

In conjunction with the sixteenth possible implementation of the second aspect, in a seventeenth possible implementation The BAR frame includes a block acknowledgment request information field corresponding to the receiving end, where the third ESI is located in the block acknowledgment request information field, each stream identification information subfield or the block acknowledgment request start sequence number controller In the domain.

In conjunction with the sixteenth possible implementation of the second aspect, in the eighteenth possible implementation, the BAR frame includes a BAR control region, and the third ESI is located in the BAR control region.

With reference to any one of the sixteenth to the eighteenth possible implementation manners of the second aspect, in the nineteenth possible implementation, the second frame type The second sequence number type indication is used to indicate whether the third ESI is included in the BAR frame.

With reference to any one of the nineteenth possible implementation manners of the second aspect, in the twentieth possible implementation, the second serial number type indication is located in a BAR control domain of the BAR frame, or And located in a block acknowledgement request information field corresponding to the receiving end included in the BAR frame.

In a third aspect, a data transmitting apparatus is provided, including:

a configuration module, configured to separately configure a temporary sequence number of each medium access control protocol data unit MPDU included in the aggregated medium access control protocol data unit A-MPDU, and temporarily install any two MPDUs included in the A-MPDU The sequence identifiers are different, wherein the stream identifiers TID of at least two MPDUs in the A-MPDU are different, and/or at least one MPDU includes a fragment;

And a sending module, configured to send the A-MPDU after the configuration module configures the temporary serial number.

With reference to the third aspect, in a first possible implementation manner, the configuration module is specifically configured to:

Each MPDU except the first MPDU of the A-MPDU carries a corresponding temporary sequence number, where the first MPDU does not carry a temporary sequence number, and the temporary sequence corresponding to the first MPDU The number is a predefined value.

With reference to the first possible implementation manner of the third aspect, in a second possible implementation manner, the temporary sequence number is located in a media access control MAC header of the MPDU, or is located at an MPDU delimitation of the MPDU. In the symbol, or in the CCMP header of the MPDU.

With reference to the second possible implementation manner of the third aspect, in a third possible implementation manner, the temporary sequence number is located in a high efficiency HE control field in the MAC header of the MPDU, or a bit The quality of service QoS control field in the MAC header of the MPDU, or in the frame control domain in the MAC header of the MPDU, or in the sequence control domain in the MAC header of the MPDU.

With reference to any one of the third aspect to the third possible implementation manner, in the fourth possible implementation manner, the A-MPDU further carries a temporary sequence number existence indication, where the temporary serial number existence indication is used Indicates whether the temporary serial number exists.

With reference to the fourth possible implementation of the third aspect, in a fifth possible implementation, the temporary sequence number presence indication is located in a physical header of the A-MPDU; or

With reference to the fifth possible implementation manner of the third aspect, in a sixth possible implementation manner, the temporary sequence number existence indicates a high efficiency HE control domain located in a MAC header of the MPDU, or is located in the MPDU The quality of service QoS control field in the MAC header, or in the frame control domain in the MAC header of the MPDU.

With reference to the third aspect to the sixth possible implementation, in a seventh possible implementation, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where the first ESI is used Identifies the current interaction sequence.

With reference to the seventh possible implementation manner of the third aspect, in an eighth possible implementation manner, the first ESI is located in a frame control domain of each MPDU in the A-MPDU, or is located in the A-MPDU. a quality of service QoS control field for each MPDU, or a high efficiency HE control field for each of the MPDUs in the A-MPDU, or an MPDU delimiter corresponding to each of the MPDUs in the A-MPDU Medium, or located in the physical layer PHY header of the A-MPDU.

With reference to any one of the third aspect to the sixth possible implementation, in a ninth possible implementation, the receiving module is further configured to:

Receiving a block acknowledgement BA frame, where the BA frame includes a block acknowledgement information field corresponding to the transmitting end, the block acknowledgement information field includes a block acknowledgement bit table subfield, and the block acknowledgement information field includes a first a sequence number type indication, where the first sequence number type indication is used to indicate that each bit of the block acknowledgement bit table subfield corresponds to a temporary sequence number of one MPDU in the A-MPDU;

Also included is a processing module for:

Determining, according to the value of each bit in the block acknowledgment bit table subfield in the BA frame received by the receiving module, whether the MPDU corresponding to the temporary sequence number corresponding to each bit is correctly received.

In conjunction with the ninth possible implementation of the third aspect, in a tenth possible implementation, the processing module is specifically configured to:

Determining the MPDU corresponding to the temporary sequence number corresponding to each bit according to the stored correspondence between the temporary sequence number of the MPDU and the sequence number and the value of each bit in the block acknowledgment bit table subfield Is it received correctly?

With reference to the ninth possible implementation manner of the third aspect, in the eleventh possible implementation, the block acknowledgment information field further includes a start sequence control subfield, where the start sequence control subfield includes And a start temporary sequence number, where the start temporary sequence number is used to indicate a temporary sequence number of the MPDU corresponding to the first bit in the block acknowledgement bit table subfield.

With reference to the eleventh possible implementation manner of the third aspect, in a twelfth possible implementation, the first sequence number type indication is located in a fragment number subfield in the start sequence control subfield Or, located in the per-identity identification information sub-domain of the block acknowledgment information field.

With reference to the twelfth possible implementation manner of the third aspect, in the thirteenth possible implementation, the per-flow identification information sub-domain includes a flow identifier, where the first serial number type is indicated as the flow The identifier, when the flow identifier is a predefined value, indicates that the start sequence control subfield in the block acknowledgement information field includes a start temporary sequence number.

With reference to any one of the ninth to thirteenth possible implementation manners of the third aspect, in the fourteenth possible implementation manner, the first interaction is carried in each MPDU included in the A-MPDU a sequence identifier ESI, the first ESI is used to identify a current interaction sequence;

The BA frame carries a second interaction sequence identifier ESI, where the second ESI is used to identify the current An interaction sequence, the second ESI being the same as the value of the first ESI.

With reference to the fourteenth possible implementation manner of the third aspect, in a fifteenth possible implementation, the second ESI is located in a per-flow identification information sub-domain in the block acknowledgement information field, or Located in the start sequence control subfield of the block acknowledgment information field.

In conjunction with the fourteenth possible implementation of the third aspect, in a sixteenth possible implementation, the second ESI is located in a block acknowledgement control field of the BA frame.

With reference to any one of the ninth to thirteenth possible implementation manners of the third aspect, in the seventeenth possible implementation, the sending module is further configured to:

After transmitting the A-MPDU, before receiving the BA frame, the receiving module sends a block acknowledge request BAR frame.

With reference to the seventeenth possible implementation manner of the third aspect, in the eighteenth possible implementation, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where the first ESI Used to identify the current interaction sequence;

With the eighteenth possible implementation of the third aspect, in a nineteenth possible implementation, the BAR frame includes a block acknowledgement request information field corresponding to the receiving end, where the third ESI is located Each stream identification information subfield or block acknowledgment request start sequence number control subfield in the block acknowledgment information field.

With reference to the eighteenth possible implementation manner of the third aspect, in a twentieth possible implementation manner, the BAR frame includes a BAR control domain, and the third ESI is located in the BAR control domain.

With reference to any one of the eighteenth to the twentieth possible implementation manners of the third aspect, in the twenty-first possible implementation manner, the second frame number type indication is further carried in the BAR frame, The second sequence number type indication is used to indicate whether the third ESI is included in the BAR frame.

With reference to the twenty-first possible implementation manner of the third aspect, in the twenty-second possible implementation manner, the second serial number type indication is located in a BAR control domain of the BAR frame, or The block confirmation request information field corresponding to the receiving end included in the BAR frame.

The fourth aspect provides a data receiving confirmation device, including:

a receiving module, configured to receive an aggregated medium access control protocol data unit A-MPDU sent by the sending end, where each medium access control protocol data unit MPDU included in the A-MPDU is respectively configured with a corresponding temporary serial number, The temporary sequence numbers of any two MPDUs included in the A-MPDU are different, wherein the stream identifiers TID of at least two MPDUs in the A-MPDU are different, and/or at least one MPDU includes fragments. ;

a sending module, configured to send a block acknowledgement BA frame, where the BA frame includes a block acknowledgement information field corresponding to the sending end, where the block acknowledgement information field includes a block acknowledgement bit table subfield, and the block acknowledgement information The domain includes a first sequence number type indication, and the first sequence number type indication is used to indicate that each bit of the block acknowledgement bit table subfield corresponds to a temporary sequence number of one MPDU in the A-MPDU.

With reference to the fourth aspect, in a first possible implementation manner, each media access control protocol data unit MPDU included in the A-MPDU is configured with a corresponding temporary sequence number, specifically:

With reference to the first possible implementation manner of the fourth aspect, in a second possible implementation manner, the temporary sequence number is located in a media access control MAC header of the MPDU, or is located at an MPDU delimitation of the MPDU. In the symbol, or in the CCMP header of the MPDU.

In conjunction with the second possible implementation of the fourth aspect, in a third possible implementation, the temporary sequence number is located in a high-efficiency HE control domain in the MAC header of the MPDU, or is located in the MAC of the MPDU. The quality of service QoS control field in the header, either in the frame control domain in the MAC header of the MPDU or in the sequence control domain in the MAC header of the MPDU.

With reference to any one of the fourth aspect to the third possible implementation manner, in a fourth possible implementation manner, the A-MPDU further carries a temporary sequence number existence indication, where the temporary serial number existence indication is used Indicates whether the temporary serial number exists.

With reference to the fourth possible implementation manner of the fourth aspect, in a fifth possible implementation, the temporary sequence number presence indication is located in a physical header of the A-MPDU; or

With reference to the fifth possible implementation manner of the foregoing aspect, in a sixth possible implementation manner, the temporary sequence number existence indicates a high efficiency HE control domain located in a MAC header of the MPDU, or is located in the MPDU The quality of service QoS control field in the MAC header, or in the frame control domain in the MAC header of the MPDU.

With reference to any one of the fourth aspect to the sixth possible implementation, in a seventh possible implementation, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where The first ESI is used to identify the current interaction sequence.

With reference to the seventh possible implementation of the fourth aspect, in an eighth possible implementation, the first ESI is located in a frame control domain of each MPDU in the A-MPDU, or is located in the A-MPDU. a quality of service QoS control field for each MPDU, or a high efficiency HE control field for each of the MPDUs in the A-MPDU, or an MPDU delimiter corresponding to each of the MPDUs in the A-MPDU Medium, or located in the physical layer PHY header of the A-MPDU.

With reference to any one of the fourth aspect to the sixth possible implementation, in a ninth possible implementation, the block acknowledgment information field further includes a start sequence control subfield, where the start sequence control The subfield includes a starting temporary sequence number, and the starting temporary sequence number is used to indicate a temporary sequence number of the MPDU corresponding to the first bit in the block acknowledgement bit table subfield.

With reference to the ninth possible implementation manner of the fourth aspect, in a tenth possible implementation, the first serial number type indication is located in a fragment number subfield in the start sequence control subfield, or Located in the per-stream identification information sub-domain of the block acknowledgment information field.

With reference to the tenth possible implementation manner of the fourth aspect, in the eleventh possible implementation, the per-identity identifier information sub-domain includes a flow identifier, where the first serial number type indication is the flow identifier And when the flow identifier is a predefined value, indicating that the start sequence control subfield in the block acknowledgement information field includes a start temporary sequence number.

With reference to the ninth or eleventh possible implementation manner of the foregoing aspect, in a twelfth possible implementation manner, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where The first ESI is used to identify a current interaction sequence;

With reference to the twelfth possible implementation of the fourth aspect, in a thirteenth possible implementation, the second ESI is located in a per-flow identification information sub-domain in the block acknowledgement information field, or is located The block confirms the start sequence control subfield in the information field.

In conjunction with the twelfth possible implementation of the fourth aspect, in a fourteenth possible implementation, the second ESI is located in a block acknowledgement control field of the BA frame.

In conjunction with the fourth aspect, in a fifteenth possible implementation, the receiving module is further configured to:

After receiving the A-MPDU, before the sending module sends the BA frame, receiving a block acknowledgement request BAR frame sent by the sending end.

With reference to the fifteenth possible implementation manner of the fourth aspect, in a sixteenth possible implementation, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where the first ESI Used to identify the current interaction sequence;

With reference to the sixteenth possible implementation manner of the foregoing aspect, in a seventeenth possible implementation, the BAR frame includes a block acknowledgement request information field corresponding to the receiving end, where the third ESI is located in the Each stream identification information subfield or block confirmation request start sequence number in the block acknowledgment request information field Control the subdomain.

With reference to the sixteenth possible implementation manner of the fourth aspect, in the eighteenth possible implementation manner, the BAR frame includes a BAR control domain, and the third ESI is located in the BAR control domain.

With reference to any one of the sixteenth to the eighteenth possible implementation manners of the fourth aspect, in the nineteenth possible implementation, the second frame type The second sequence number type indication is used to indicate whether the third ESI is included in the BAR frame.

With reference to any one of the nineteenth possible implementation manners of the fourth aspect, in the twentieth possible implementation, the second serial number type indication is located in a BAR control domain of the BAR frame, or And located in a block acknowledgement request information field corresponding to the receiving end included in the BAR frame.

In a fifth aspect, a device is provided, the device comprising a processor, a memory and a transceiver, wherein the transceiver receives and transmits data under the control of the processor, the memory stores a preset program, and the processor reads The program saved in the memory, according to the program performs the following process:

Configuring a temporary sequence number of each medium access control protocol data unit MPDU included in the aggregated medium access control protocol data unit A-MPDU, where the temporary sequence numbers of any two MPDUs included in the A-MPDU are different. The stream identifier TID of at least two MPDUs in the A-MPDU is different, and/or at least one MPDU includes a fragment;

Sending, by the transceiver, the A-MPDU after the configuration module configures the temporary sequence number.

With reference to the fifth aspect, in a first possible implementation manner, the processor is specifically configured to:

With reference to the first possible implementation manner of the fifth aspect, in a second possible implementation manner, the temporary sequence number is located in a media access control MAC header of the MPDU, or is located in an MPDU delimitation of the MPDU. In the symbol, or in the CCMP header of the MPDU.

With reference to the second possible implementation manner of the fifth aspect, in a third possible implementation manner, the temporary sequence number is located in a high efficiency HE control field in the MAC header of the MPDU, or a bit The quality of service QoS control field in the MAC header of the MPDU, or in the frame control domain in the MAC header of the MPDU, or in the sequence control domain in the MAC header of the MPDU.

With reference to any one of the fifth aspect to the third possible implementation manner, in the fourth possible implementation manner, the A-MPDU further carries a temporary sequence number existence indication, where the temporary serial number existence indication is used Indicates whether the temporary serial number exists.

With reference to the fourth possible implementation manner of the fifth aspect, in a fifth possible implementation, the temporary sequence number presence indication is located in a physical header of the A-MPDU; or

With reference to the fifth possible implementation manner of the fifth aspect, in a sixth possible implementation manner, the temporary sequence number existence indicates a high efficiency HE control domain located in a MAC header of the MPDU, or is located in the MPDU The quality of service QoS control field in the MAC header, or in the frame control domain in the MAC header of the MPDU.

With reference to the fifth aspect to the sixth possible implementation, in a seventh possible implementation, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where the first ESI is used Identifies the current interaction sequence.

With reference to the seventh possible implementation manner of the fifth aspect, in an eighth possible implementation manner, the first ESI is located in a frame control domain of each MPDU in the A-MPDU, or is located in the A-MPDU a quality of service QoS control field for each MPDU, or a high efficiency HE control field for each of the MPDUs in the A-MPDU, or an MPDU delimiter corresponding to each of the MPDUs in the A-MPDU Medium, or located in the physical layer PHY header of the A-MPDU.

With reference to any one of the fifth aspect to the sixth possible implementation manner, in a ninth possible implementation manner, the processor is configured to:

Receiving, by the transceiver, a block acknowledgement BA frame, where the BA frame includes a block acknowledgement information field corresponding to the sender, the block acknowledgement information field includes a block acknowledgement bit table subfield, and the block acknowledgement information field And including a first serial number type indication, where the first serial number type indication is used to indicate that each bit of the block acknowledgement bit table subfield corresponds to a temporary sequence number of one MPDU in the A-MPDU;

And determining, according to the received value of each bit in the block acknowledgment bit table in the BA frame, whether the MPDU corresponding to the temporary sequence number corresponding to each bit is correctly received.

In conjunction with the ninth possible implementation of the fifth aspect, in a tenth possible implementation, the processor is specifically configured to:

With reference to the ninth possible implementation manner of the fifth aspect, in an eleventh possible implementation, the block acknowledgment information field further includes a start sequence control subfield, where the start sequence control subfield includes And a start temporary sequence number, where the start temporary sequence number is used to indicate a temporary sequence number of the MPDU corresponding to the first bit in the block acknowledgement bit table subfield.

With reference to the eleventh possible implementation manner of the fifth aspect, in a twelfth possible implementation, the first sequence number type indication is located in a fragment number subfield in the start sequence control subfield Or, located in the per-identity identification information sub-domain of the block acknowledgment information field.

With reference to the twelfth possible implementation manner of the fifth aspect, in the thirteenth possible implementation, the per-flow identification information sub-domain includes a flow identifier, where the first serial number type is indicated as the flow The identifier, when the flow identifier is a predefined value, indicates that the start sequence control subfield in the block acknowledgement information field includes a start temporary sequence number.

With reference to any one of the ninth to the thirteenth possible implementation manners of the fifth aspect, in the fourteenth possible implementation manner, the first interaction is carried in each MPDU included in the A-MPDU a sequence identifier ESI, the first ESI is used to identify a current interaction sequence;

With reference to the fourteenth possible implementation manner of the fifth aspect, in a fifteenth possible implementation, the second ESI is located in a per-flow identification information sub-domain in the block acknowledgement information field, or The block confirms the start sequence control subfield in the information field.

In conjunction with the fourteenth possible implementation of the fifth aspect, in a sixteenth possible implementation, the second ESI is located in a block acknowledgement control field of the BA frame.

With reference to any one of the ninth to thirteenth possible implementation manners of the fifth aspect, in the seventeenth possible implementation, the processor is further configured to:

The instructing transceiver sends a block acknowledge request BAR frame before receiving the BA frame after transmitting the A-MPDU.

With reference to the seventeenth possible implementation manner of the fifth aspect, in the eighteenth possible implementation, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where the first ESI Used to identify the current interaction sequence;

With reference to the eighteenth possible implementation manner of the fifth aspect, in a nineteenth possible implementation, the BAR frame includes a block acknowledgement request information field corresponding to the receiving end, where the third ESI is located Each stream identification information subfield or block acknowledgment request start sequence number control subfield in the block acknowledgment information field.

With reference to the eighteenth possible implementation manner of the fifth aspect, in a twentieth possible implementation manner, the BAR frame includes a BAR control domain, and the third ESI is located in the BAR control domain.

With reference to any one of the eighteenth to the twenty-first possible implementation manners of the fifth aspect, in the twentieth possible implementation manner, the second frame type type indication is further carried in the BAR frame, The second sequence number type indication is used to indicate whether the third ESI is included in the BAR frame.

With reference to the twenty-first possible implementation manner of the fifth aspect, in the twenty-second possible implementation manner, the second serial number type indication is located in a BAR control domain of the BAR frame, or The block confirmation request information field corresponding to the receiving end included in the BAR frame.

A sixth aspect provides an apparatus, the device comprising a processor, a memory, and a transceiver, wherein the transceiver receives and transmits data under the control of the processor, the memory stores a preset program, and the processor reads the memory. The saved program, according to the program performs the following process:

Receiving, by the transceiver, an aggregated medium access control protocol data unit A-MPDU sent by the sending end, where each medium access control protocol data unit MPDU included in the A-MPDU is respectively configured with a corresponding temporary serial number, where the A - The temporary sequence numbers of any two MPDUs included in the MPDU are different, wherein the stream identifiers TID of at least two MPDUs in the A-MPDU are different, and/or at least one MPDU includes a fragment;

Transmitting, by the transceiver, a block acknowledgment BA frame, where the BA frame includes a block acknowledgment information field corresponding to the transmitting end, the block acknowledgment information field includes a block acknowledgment bit table subfield, and the block acknowledgment information field And including a first serial number type indication, where the first serial number type indication is used to indicate that each bit of the block acknowledgement bit table subfield corresponds to a temporary sequence number of one MPDU in the A-MPDU.

With reference to the sixth aspect, in a first possible implementation manner, each media access control protocol data unit MPDU included in the A-MPDU is configured with a corresponding temporary sequence number, specifically:

With reference to the first possible implementation manner of the sixth aspect, in a second possible implementation manner, the temporary sequence number is located in a media access control MAC header of the MPDU, or is located at an MPDU delimitation of the MPDU. In the symbol, or in the CCMP header of the MPDU.

With reference to the second possible implementation manner of the sixth aspect, in a third possible implementation manner, the temporary sequence number is located in a high efficiency HE control domain in a MAC header of the MPDU, or a MAC located in the MPDU. The quality of service QoS control field in the header, either in the frame control domain in the MAC header of the MPDU or in the sequence control domain in the MAC header of the MPDU.

Combining any of the sixth aspect to the third possible implementation, in the fourth possible In an implementation manner, the A-MPDU further carries a temporary sequence number presence indication, where the temporary sequence number presence indication is used to indicate whether the temporary sequence number exists.

With reference to the fourth possible implementation manner of the sixth aspect, in a fifth possible implementation, the temporary sequence number presence indication is located in a physical header of the A-MPDU; or

With reference to the fifth possible implementation manner of the sixth aspect, in a sixth possible implementation manner, the temporary sequence number existence indicates a high efficiency HE control domain located in a MAC header of the MPDU, or is located in the MPDU The quality of service QoS control field in the MAC header, or in the frame control domain in the MAC header of the MPDU.

With reference to any one of the sixth aspect to the sixth possible implementation, in a seventh possible implementation, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where The first ESI is used to identify the current interaction sequence.

With reference to the seventh possible implementation manner of the sixth aspect, in an eighth possible implementation, the first ESI is located in a frame control domain of each MPDU in the A-MPDU, or is located in the A-MPDU a quality of service QoS control field for each MPDU, or a high efficiency HE control field for each of the MPDUs in the A-MPDU, or an MPDU delimiter corresponding to each of the MPDUs in the A-MPDU Medium, or located in the physical layer PHY header of the A-MPDU.

With reference to any one of the sixth aspect to the sixth possible implementation, in a ninth possible implementation, the block acknowledgment information field further includes a start sequence control subfield, where the start sequence control The subfield includes a starting temporary sequence number, and the starting temporary sequence number is used to indicate a temporary sequence number of the MPDU corresponding to the first bit in the block acknowledgement bit table subfield.

With reference to the ninth possible implementation manner of the sixth aspect, in a tenth possible implementation manner, The first sequence number type indication is located in a fragment number subfield of the start sequence control subfield, or is located in each stream identification information subfield in the block acknowledgement information field.

With reference to the tenth possible implementation manner of the sixth aspect, in the eleventh possible implementation, the per-flow identification information sub-domain includes a flow identifier, where the first serial number type indication is the flow identifier And when the flow identifier is a predefined value, indicating that the start sequence control subfield in the block acknowledgement information field includes a start temporary sequence number.

With reference to the ninth or the tenth possible implementation manner of the sixth aspect, in the twelfth possible implementation, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where The first ESI is used to identify the current interaction sequence;

With reference to the twelfth possible implementation manner of the sixth aspect, in a thirteenth possible implementation manner, the second ESI is located in a per-flow identification information sub-domain in the block acknowledgement information field, or is located The block confirms the start sequence control subfield in the information field.

In conjunction with the twelfth possible implementation of the sixth aspect, in a fourteenth possible implementation, the second ESI is located in a block acknowledgement control field of the BA frame.

In conjunction with the sixth aspect, in a fifteenth possible implementation, the processor is further configured to:

After receiving the A-MPDU, the transceiver is instructed to receive a block acknowledgement request BAR frame sent by the sending end before sending the BA frame.

With reference to the fifteenth possible implementation manner of the sixth aspect, in the sixteenth possible implementation, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where the first ESI Used to identify the current interaction sequence;

In conjunction with the sixteenth possible implementation of the sixth aspect, in a seventeenth possible implementation The BAR frame includes a block acknowledgment request information field corresponding to the receiving end, where the third ESI is located in the block acknowledgment request information field, each stream identification information subfield or the block acknowledgment request start sequence number controller In the domain.

With reference to the sixteenth possible implementation manner of the sixth aspect, in the eighteenth possible implementation manner, the BAR frame includes a BAR control domain, and the third ESI is located in the BAR control domain.

With reference to any one of the sixteenth to the eighteenth possible implementation manners of the sixth aspect, in the nineteenth possible implementation, the second frame type The second sequence number type indication is used to indicate whether the third ESI is included in the BAR frame.

With reference to any one of the nineteenth possible implementation manners of the sixth aspect, in the twentieth possible implementation, the second serial number type indication is located in a BAR control domain of the BAR frame, or And located in a block acknowledgement request information field corresponding to the receiving end included in the BAR frame.

In the embodiment of the present invention, in a case where the TIDs of at least two MPDUs in the A-MPDU are different and/or at least one MPDU includes a fragment, the transmitting end separately configures the information included in the A-MPDU. The temporary sequence number of each MPDU, the temporary sequence number of all MPDUs in the A-MPDU is a uniform number, to ensure that the temporary sequence numbers of any two MPDUs included in the A-MPDU are different, so that the receiving end is replying to the BA. During the frame, all the MPDUs in the A-MPDU can be acknowledged in the BA frame according to the temporary sequence number of each MPDU in the A-MPDU, thereby reducing the transmission overhead of the BA frame and solving the problem. I have identified difficult problems.

DRAWINGS

Figure 1 is a schematic diagram of an interaction sequence;

2 is a schematic diagram of transmission of a plurality of A-MPDUs having different TIDs;

3 is a schematic structural diagram of a multi-STA BA frame;

4a is a schematic diagram of transmission in the case where an MPDU including one TID is included in an A-MPDU;

4b is a schematic diagram of transmission in the case where an MPDU including multiple TIDs is included in an A-MPDU;

FIG. 5 is a schematic structural diagram of a multi-TID BA frame using a combination of AID and TID as an identifier;

6 is a schematic flowchart of a method for transmitting data by a transmitting end according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of an A-MPDU in which a new domain bearer temporary sequence number is added to a MAC header of an MPDU according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of an HE control field of an MPDU according to an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a frame control domain of an MPDU according to an embodiment of the present invention;

10a is a schematic diagram of mapping between a sequence number and a temporary sequence number when a sequence control field of an MPDU is used to carry a temporary sequence number according to an embodiment of the present invention;

FIG. 10b is a diagram showing a counter change of each TID before and after A-MPDU transmission when the sequence control field of the MPDU is used to carry the temporary sequence number according to the embodiment of the present invention;

11 is a schematic structural diagram of an MPDU Delimiter according to an embodiment of the present invention;

12 is a schematic structural diagram of a CCMP MPDU;

FIG. 13 is a schematic flowchart of a method for receiving data confirmation by a receiving end according to an embodiment of the present invention;

FIG. 14 is a schematic structural diagram of a BA frame according to an embodiment of the present invention;

FIG. 15 is a schematic structural diagram of another BA frame according to an embodiment of the present invention;

FIG. 16 is a schematic structural diagram of a BAR frame according to an embodiment of the present invention;

17 is a schematic structural diagram of a data transmitting apparatus according to an embodiment of the present invention;

FIG. 18 is a schematic structural diagram of a data receiving and confirming apparatus according to an embodiment of the present invention; FIG.

FIG. 19 is a schematic structural diagram of a device according to an embodiment of the present invention;

FIG. 20 is a schematic structural diagram of another device according to an embodiment of the present invention.

detailed description

The present invention will be further described in detail with reference to the accompanying drawings, in which FIG. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The standard specifies that the sequence number (Sequence Number, SN for short) of the Quality of Service (QoS) data frame maintained by the sender is for each <RA, TID>, RA (Receiving Address). Indicates the receiving address. In other words, the serial numbers of the MPDUs of different TIDs in a multi-TID A-MPDU are independent of each other. For example, in a multi-TID A-MPDU, the sequence number corresponding to the MPDU with TID=1 is 10-15, the sequence number corresponding to the MPDU with TID=2 is 1001~1007, and the sequence number corresponding to the MPDU with TID=3 is 1005 ~ 1015, and so on.

In the current BA frame, only one field in each BA Info is used to carry the starting sequence number (ie, the MPDU sequence number corresponding to the first bit in the BA Bitmap), so it is impossible to indicate that the BA Bitmap carries different TIDs. Multiple starting sequence numbers.

Based on the above analysis, the basic idea of the present invention is: in the case that at least two MPDUs in the A-MPDU have different TIDs and/or at least one MPDU includes fragments, the transmitting end configures each of the A-MPDUs respectively. The temporary sequence number of the MPDUs, the temporary sequence numbers of all the MPDUs in the A-MPDU are uniformly numbered to ensure that the temporary sequence numbers of any two MPDUs in the A-MPDU are different, so that the receiving end responds to the BA frame. All MPDUs in the A-MPDU may be acknowledged in the BA frame according to the temporary sequence number of each MPDU in the A-MPDU using a block acknowledgment information field.

It should be noted that the so-called "temporary serial number of all MPDUs is a uniform number", which may be an ordered numbering of multiple MPDUs, or an unordered number, as long as the temporary serial numbers of any two MPDUs are different. . Ordered numbers such as: 0, 1, 2, 3..., or 63, 62, 61, 60..., or 0, 2, 4, 6, etc.; unordered numbers such as: 15, 2, 30, 59, 11, .... However, from the perspective of the general habit and the shortest representation length of the temporary serial number, the orderly incremental numbering of 0, 1, 2, 3... is obviously more in line with the general way of thinking. Therefore, the ordered incremental numbering is temporary. A preferred scheme for serial numbering.

Based on the concept, in the embodiment of the present invention, as shown in FIG. 6, the detailed method for transmitting data by the transmitting end is as follows:

601: The sender configures a Temporary Sequence Number (T-SN) of each MPDU included in the A-MPDU, where the A-MPDU includes multiple MPDUs, and temporary of any two MPDUs in the A-MPDU. The sequence numbers are different, where the stream identifiers TID of at least two MPDUs in the A-MPDU are different, and/or at least one MPDU is included. Fragmentation.

In the implementation, the A-MPDU also carries a temporary sequence number presence indication, and the temporary sequence number presence indication is used to indicate whether a temporary sequence number exists. Specifically, the temporary sequence number presence indication is located in a physical layer (Physical Layer, PHY for short) header of the A-MPDU, and the physical layer header is generally referred to as a physical header; or the temporary sequence number presence indication indicates that each MPDU included in the A-MPDU is included. In the corresponding MPDU delimiter (Delimiter); or, the temporary sequence number presence indication is located in the MAC header of each MPDU included in the A-MPDU. The PHY header is also called the PLCP (Physical Layer Convergence Procedure) header. The temporary sequence number presence indication can be indicated by the bit in the SIG (Signal) field in the PLCP header. PLCP can also be used. The polarity of some symbols in the header is indicated, or is indicated by the remainder of the L-SIG (Legacy Signal) field in the PLCP header divided by 3 .

For example, the temporary sequence number exists to indicate a High Efficiency (HE) control domain located in the MAC header of the MPDU, or a QoS control domain located in the MAC header of the MPDU, or a frame control domain located in the MAC header of the MPDU. in. Among them, the HE control domain may also be referred to as a High Throughout (HT) control domain HE variant (Variant) or a High Efficiency Wireless Local Area Network (HEW) in related standards or literature. ) Control domain.

In the implementation, the temporary serial number can be carried in various manners, including but not limited to the following specific implementation manners:

In a first embodiment, the temporary sequence number is located in a Medium Access Control (MAC) header of the MPDU. This embodiment may include, but is not limited to, the following ways:

First, the sender carries a corresponding temporary sequence number in each MPDU included in the A-MPDU. As shown in FIG. 7, a new domain is added to the MAC header of the MPDU, and the new domain is used to carry the temporary sequence number. Specifically, a new field is added to the MAC header of the MPDU in each subframe of the A-MPDU. To ensure that the total length of the MAC header is an integer number of bytes, the length of the newly added domain is 1 byte, but actually The number of bits used to carry the temporary sequence number may be less than 1 byte, such as 6 bits.

The presence of the temporary sequence number indicates that the existing domain bearer can be used, including but not limited to the following cases:

Case a, the temporary sequence number presence indication is located in the physical header, in particular, the temporary sequence number presence indication may be located in the signaling domain in the physical header. When the temporary sequence number indicates that the first preset value is taken, for example, when 1, the temporary sequence number exists in the MAC header of each MPDU in the A-MPDU, otherwise, the temporary sequence number does not exist in the A-MPDU. . The temporary sequence number presence indication may also be indicated by the polarity of a particular symbol of a certain field in the physical header, for example, when the polarity of the domain specific symbol is the first preset polarity, indicating each of the A-MPDUs A temporary sequence number exists in the MAC header of the MPDU. Otherwise, it indicates that there is no temporary sequence number in the A-MPDU. The temporary sequence number presence indication may also be indicated by a remainder of the L-Length value in the L-SIG field in the physical header divided by 3, for example, a remainder of 1 indicates that a temporary sequence number exists in the MAC header of each MPDU in the A-MPDU. A remainder of 2 indicates that there is no temporary sequence number in the A-MPDU.

Case B, the temporary sequence number presence indication is located in the MPDU delimiter (Delimiter) corresponding to each MPDU. Currently, there is a reserved bit in the MPDU Delimiter, and the reserved bit can be used to carry the temporary sequence number presence indication, indicating that the MPDU Delimiter corresponds to Whether there is a temporary serial number in the MPDU.

Case c, the temporary sequence number exists in the MAC header of each MPDU of the A-MPDU, and may specifically be a QoS control domain or a HE control domain or a Frame Control (FC) domain in the MAC header, for example, located in a frame. From the distribution system (From DS; DS, Distribution System) domain in the control domain or to the Distribution System (To DS) domain.

Second, the temporary domain number is carried in the existing domain in the MAC header of the MPDU.

Specifically, it can be divided into several situations:

In case a, the sender carries a corresponding temporary sequence number in each MPDU included in the A-MPDU, and the temporary sequence number is located in the HE control field in the MAC header of the MPDU.

For example, as shown in FIG. 8, the HT control domain of the 802.11n standard has 8-bit reserved bits. If the HE control domain also adopts a similar structure, 6 bits can be used to carry the temporary sequence number, and one of the bits carries the temporary. The serial number indicates an indication. In Figure 8, the CSI is the Channel State Information, the NDP is the Null Data Packet, the AC is the Access Category, and the RDG is the Reverse Direction. Grant), the PPDU represents the Physical Layer Convergence Procedure Protocol Data Unit, the TRQ represents the training request, and the MAI represents the modulation coding scheme request or the antenna selection indication (MRQ or ASEL Indication; MRQ, ie, MCS Request; ASEL) , ie, Antenna Selection; MCS, Modulation and Coding Scheme, MFSI indicates the MCS Feedback Sequence Identifier, MFB indicates the modulation and coding scheme feedback (MCS Feedback), and the ASELC identifies the antenna selection command (ASEL Command).

Case b, the temporary sequence number is located in the QoS control field in the MAC header of the MPDU.

The sender carries the corresponding temporary sequence number in each MPDU included in the A-MPDU. According to the current standard, if the A-MPDU contains two or more subframes, the Aggregate MAC Service Data Unit (A-MSDU) cannot be used in the MPDU, that is, the B7 in the QoS control domain. The bit is a reserved bit, and the multi-TID A-MPDU contains at least two subframes. Therefore, the B7 bit in the QoS control field must be a reserved bit, so the bit can be used to carry the temporary sequence number presence indication, and the bit is located after B7. The 6 bits of B8 to B15 carry the temporary sequence number. It should be noted that the B8 to the B15 in the QoS control domain are defined to carry the data volume or the expected transmission time of the stream corresponding to the TID (that is, the content carried by the B0 to B3 bits) to be transmitted on the device. However, many technologies have been proposed in the 802.11 standard to implement this function, such as random access technology, etc., so B8 to B15 in the QoS control domain can be redefined as being used to carry the temporary sequence number.

If the original definition of B8 to B15 in the QoS control domain is to be reserved, the following scheme may be adopted: the sender carries a corresponding temporary sequence number in each MPDU except the first MPDU of the A-MPDU, the first An MPDU does not carry a temporary sequence number, and the temporary sequence number corresponding to the first MPDU is a predefined value, for example, the predetermined value is zero. Set the B7 bit in the QoS control field of the first MPDU in the A-MPDU to zero, indicating that the B8 to B15 bits retain the original function, but the role is modified to B8 to B15 to carry all the data to be transmitted or the desired transmission. The time, that is, the sum of the amount of data to be transmitted of all TIDs or the transmission time expected to transmit the data, the B7 bits of the MPDUs other than the first MPDU are set to 1, and the B8 to B15 bits carry the temporary sequence number. The principle of this scheme is that the location of the first MPDU is clear and unambiguous, so the temporary sequence number is set. It is set to the default value, for example, the default value is zero, but it is not necessary to carry it explicitly in the MPDU.

In case c, the sender carries a corresponding temporary sequence number in each MPDU included in the A-MPDU, and the temporary sequence number is located in a frame control field in the MAC header of the MPDU.

In the MU transmission, as shown in FIG. 9, the From DS and the To DS in the frame control domain are reserved bits, and one of the bits may be used to carry the temporary sequence number presence indication. When the temporary sequence number exists as the set value, For example, when it is 1, it indicates that the type (Subtype) subfield and the Subtype (Subtype) subfield in the frame control domain carry the temporary sequence number. Otherwise, the type (Subtype) subfield and subtype (Subtype) in the frame control domain. The subdomain maintains its original functionality. The principle of the scheme is that the frame type that can be aggregated by the multi-TID A-MPDU is only a QoS Data frame, that is, Type=10 and Subtype=1000. Therefore, the presence of the temporary sequence number presence indication indicates that the A-MPDU is multi. In the case of -TID A-MPDU, the Type and Subtype subdomains can be used to carry other information, such as temporary sequence numbers.

In case d, the sender carries a corresponding temporary sequence number in each MPDU included in the A-MPDU, and the temporary sequence number is located in a sequence control (Sequence Control) field in the MAC header of the MPDU. This scheme is used in the case of an MPDU containing at least two TIDs in an A-MPDU.

Specifically, the sequence number subdomain in the sequence control domain is used to carry the temporary sequence number. As shown in FIG. 7 and FIG. 9, the MAC headers of the MPDUs of the management frame and the data frame all include a sequence control field, and the length is 2 bytes, wherein the 12-bit sequence number sub-domain is used to carry the sequence number of the current MPDU. In this embodiment, when the temporary sequence number presence indication indicates that the current MPDU uses the temporary sequence number, the bearer in the sequence number subfield will no longer be the sequence number, but the temporary sequence number.

At this time, the temporary sequence number may be the “unified number” described above, that is, the MPDU temporary sequence number and the sequence number are irrelevant, but may also be generated based on the sequence number of the MPDUs aggregated in the current A-MPDU. A specific implementation method is to use the maximum value in the Counter of multiple TIDs to be aggregated as the starting value of the temporary sequence number in the A-MPDU. The sender maintains a counter for each TID of each STA, and records the starting sequence number of the current MPDU to be sent. As shown in FIG. 10a, the MPDUs to be sent by the transmitting end to the receiving end are TID1 (SN=50-52), TID2 (SN=1000-1001), and TID3 (SN=2055-2059), and the counter values of the three TIDs are They are 50, 1000, and 2055 respectively. Obviously, the maximum value of TID3 is Counter=2055, therefore, A-MPDU The temporary serial number starts at 2055 and continues until 2062. The MPDU sequences of different TIDs in the A-MPDU may be arbitrarily arranged, and may not be in the order of TID3, TID1, TID2 shown in FIG. 10a, or even multiple MPDUs of the same TID may be non-contiguous. Note that in order to prevent the receiving end from receiving the same MPDU with the same MPDU sequence number of a TID in the A-MPDU within a short time after the current A-MPDU, the counter value of all TIDs should be obtained after the above A-MPDU transmission is completed. Adjusted to the maximum temporary sequence number value in the A-MPDU plus 1, as shown in Figure 10b, the counter values of the three TIDs are adjusted to 2063. In addition, in order to avoid confusion between the temporary sequence number of the MPDU in the A-MPDU and the sequence number of the MPDU that was sent before the current A-MPDU but has not received the acknowledgement frame of the receiving end, the sender should be specified to be aggregated in the A-MPDU. The MPDU of the same TID before the MPDU satisfies the following conditions: 1) the receiving end acknowledgement has been received, or 2) the transmitting end has abandoned the transmission due to the frame validity period and the like. Another specific implementation method is to sort the MPDUs to be sent, in which the sequence number of the first MPDU is used as the starting value of the temporary sequence number in the A-MPDU, and the temporary sequence numbers of other MPDUs are sequentially incremented. .

In the second embodiment, the sender carries the corresponding temporary sequence number in each MPDU included in the A-MPDU, and the temporary sequence number is located in the MPDU delimiter of the MPDU.

Specifically, one byte is added to the MPDU Delimiter of each MPDU in the A-MPDU to carry the temporary sequence number, and the temporary sequence number actually occupies less than or equal to one byte, for example, the temporary serial number occupies 6 Bits, as shown in Figure 11, the added bytes are located after the Delimiter Signature subfield. The advantage of this placement is that it does not affect the original scheme of checking the delimiter signature every 4 bytes. It should be noted that the checksum of the newly added byte (that is, the byte used to carry the temporary sequence number) is still located in the Cyclic Redundancy Code (CRC) subfield in the MPDU Delimiter, that is, the temporary sequence number and The other parts of the MPDU Delimiter are checked together and the result of the check is still placed in the CRC subfield before the delimiter signature.

In this implementation manner, the specific location of the temporary sequence number existence indication may be in the PHY header, and whether there is a new byte in all MPDU Delimiter domains of the current A-MPDU, that is, a temporary sequence The serial number is displayed; or the temporary serial number exists in the reserved bit of each MPDU Delimiter of the A-MPDU, indicating whether there is a new byte, that is, a temporary sequence number, in the MPDU corresponding to the MPDU Delimiter.

In a third embodiment, the sender carries the corresponding temporary sequence number in each MPDU included in the A-MPDU, and the temporary sequence number is located in the CCMP (Counter mode with Cipher-block chaining message authentication code protocol). The cipher block chain message authentication code protocol) is in the header. This scheme is only applicable to the case where all MPDUs in the A-MPDU are transmitted by CCMP encryption.

Figure 12 shows the format of the CCMP MPDU. Comparing the format of the MPDUs in FIG. 7 and FIG. 9, it can be seen that if the MPDU is encrypted transmission (indicated by the "protected frame" bit of the frame control field in the MAC header) and encrypted using CCMP (indicated by ExtIV in the CCMP header), the frame is The body part includes CCMP headers, data and Message Integrity Code (MIC), and both Data and MIC are protected by encryption. The CCMP header includes a 6-byte Packet Number (PN), 6 bytes are represented by PN0 to PN5, PN0 is a low byte, and PN5 is a high byte. For the transmitting end, the PNs of different MPDUs are sequentially incremented by one, and the receiving end and the TID are not distinguished. Even if the retransmission frame is retransmitted, it is different from the PN transmitted the previous time. Therefore, the PN can uniquely identify an MPDU. Based on this, the lower bits of the PN or PN can be used as the temporary sequence number of the MPDU, for example, PN0 is used as the temporary sequence number of the MPDU. For this embodiment, the temporary sequence number presence indication may also be located in the CCMP header. For example, it is carried by any reserved bit in the CCMP header.

In the implementation, each MPDU included in the A-MPDU carries a first Exchange Sequence Identifier (ESI), and the first ESI is used to identify the current interaction sequence. The sequence of the A-MPDU, the BA frame, or the sequence of the A-MPDU, the BAR frame, and the BA frame. Specifically, the first ESI is included in a frame control domain or a QoS control domain or an HE control domain or an MPDU delimiter of each MPDU included in the A-MPDU. The first ESI may also be located in the PHY header of the A-MPDU. Specifically, the first ESI is located in the SIG field in the PHY header of the A-MPDU.

In a specific implementation, ESI generally occupies 2 to 3 bits.

Step 602: The sender sends the A-MPDU.

In the implementation, the original sequence number (SN) of each MPDU in the A-MPDU still exists, and is located in the Sequence Control field of the MAC header of each MPDU in the A-MPDU, and is saved by the sender. Correspondence between the temporary serial number and the serial number of each MPDU in the A-MPDU.

In the embodiment of the present invention, as shown in FIG. 13, the detailed method for the receiving end to receive the A-MPDU and perform data receiving confirmation is as follows:

Step 1101: The receiving end receives the A-MPDU sent by the sending end, and each MPDU included in the A-MPDU is configured with a corresponding temporary sequence number, where the A-MPDU includes multiple MPDUs, and the A-MPDU includes any The temporary sequence numbers of the two MPDUs are different, wherein the stream identifiers TID of at least two MPDUs in the A-MPDU are different, and/or at least one MPDU includes fragments.

In the implementation, each MPDU included in the A-MPDU carries a corresponding temporary sequence number; or each MPDU except the first MPDU of the A-MPDU carries a temporary sequence number, the first MPDU The temporary serial number is not carried in, and the temporary serial number corresponding to the first MPDU is a predefined value. The specific parameters carried in the A-MPDU and the manner in which the parameters are carried are the same as those in the sending end, and are not described here.

In the implementation, the original sequence number (SN) of each MPDU in the A-MPDU still exists. Therefore, after receiving the A-MPDU, the receiving end still sorts the sequence according to the SN of each MPDU. Therefore, there is no problem that the order of multiple MPDUs of the same TID is disordered.

Step 1102: The receiving end sends a BA frame, where the BA frame includes a block acknowledgement information field (also referred to as a BA Info field) corresponding to the sender end, where the block acknowledgement information field includes a block acknowledgement bit table (BA Bitmap) subfield. And the block acknowledgement information field includes a first sequence number type (SN Type) indication, where the first sequence number type indication is used to indicate that each bit of the block acknowledgement bit table subfield corresponds to an MPDU in the A-MPDU. serial number.

FIG. 14 is a schematic structural diagram of a BA frame including a BA control domain and BA Info. The domain, wherein the BA Info field includes a Per-TID Info subfield, a Starting Sequence Control subfield, and a Block Acknowledge Bit Table subfield. Each bit in the BA Bitmap subfield corresponds to the T-SN of one MPDU. It should be noted that FIG. 14 is only an example and does not represent all possible implementation manners, and the scope of protection of the present invention is not limited thereto.

In an implementation, the first sequence number type indication is located in a Fragment Number subfield in the start sequence control subfield, or is located in each flow identification information subfield in the block acknowledgement information field, or is located in the The block of the BA frame confirms the control domain. In a specific implementation, the first sequence number type indicates that one bit is occupied. When the first sequence number type indicates that the first value is taken, for example, when the first serial number type indication value is 1, the indicator block confirms the bit table subfield. Each bit corresponds to a temporary sequence number of an MPDU in the A-MPDU; when the first sequence number type indicates a second value, for example, when the first serial number type indicates a value of 0, the block acknowledge bit table is indicated. Each bit of the field corresponds to the sequence number of one MPDU in the A-MPDU. For the case where the first sequence number type indicates the per-flow identification information sub-domain located in the acknowledgment information field, the flow identifier (TID) therein may also be utilized to take a predefined value to indicate. For example, if the predefined value is 1111, when the TID is 1111, it indicates that the starting sequence number in the current acknowledgment information field carries the initial temporary sequence number; otherwise, the starting sequence number subfield in the current acknowledgment information field. It carries the starting serial number. If the BA frame contains only one BA Info field, the first sequence number type indication may also be located in the BA control field of the BA frame, for example, with a 1-bit reserved bit in the BA control field. Further, a TID bit table may also be added in the BA control field, where 1 indicates that the subsequent block acknowledgment bit table subfield contains an acknowledgment of the MPDU of the corresponding TID. For example, the block acknowledgment bit table is 1001, indicating that the subsequent block acknowledgment bit table subfield contains acknowledgments for TID 1 and TID 4, which simplifies the processing after the data sender receives the BA frame.

In the implementation, the block acknowledgment information field includes a start sequence control subfield, where the start sequence control subfield includes a start temporary sequence number, where the start temporary sequence number is used to indicate the first bit in the block acknowledgment bit table subfield. The temporary serial number of the MPDU corresponding to the bit.

In a specific implementation, as shown in FIG. 14, the start sequence control subfield includes a slice number subfield and a start sequence number subfield, and the slice number subfield occupies 4 bits, wherein one bit is the first sequence number type. Indicates that the remaining three bits are used to indicate the length of the block acknowledgment bit table; the starting sequence number subfield occupies 12 bits, The start sequence number subfield carries the start temporary sequence number or the start sequence number, that is, the first sequence number type indicates the first value, that is, each bit corresponding to the block acknowledgment bit table subfield corresponds to an A-MPDU. In the case of the temporary sequence number of an MPDU in the first sequence number, the initial sequence number field carries the initial temporary sequence number. When the first sequence number type indicates the second value, the block acknowledges the bit table subfield. In the case where each bit corresponds to the sequence number of one MPDU in the A-MPDU, the starting sequence number subfield carries the starting sequence number.

In the implementation, when each MPDU included in the A-MPDU carries the first ESI for identifying the current interaction sequence, the second ESI is carried in the BA frame, and the second ESI is also used to identify the current interaction sequence, and The second ESI has the same value as the first ESI.

In the implementation, the setting manner of the second ESI includes but is not limited to the following methods:

First, the second ESI is located in each flow identification information subfield in the block acknowledgment information field. As shown in FIG. 15, since the TID Value subfield of each flow identification information subfield in the block acknowledgement information field in the BA frame is a reserved field, the second ESI may be located in the TID Value subfield.

Specifically, when the first sequence number type indicates the first value, that is, the bit indicating that each bit of the block acknowledgment bit table subfield corresponds to the temporary sequence number of one MPDU in the A-MPDU, the TID Value sub The second ESI is carried in the domain; when the first sequence number type indicates the second value, that is, the bit indicating that each bit of the block acknowledgment bit table subfield corresponds to the sequence number of one MPDU in the A-MPDU Next, the TID value is carried in the TID Value subdomain.

Second, the second ESI in the BA frame is located in the start sequence control subfield in the block acknowledgment information field.

In the implementation, when the length of the BA Bitmap is fixed and the T-SN corresponding to the first bit is also fixed, for example, the length of the BA Bitmap is always 64 bits, and the T-SN corresponding to the first bit is always zero, without indicating The initial sequence number, that is, the start sequence number subfield is a reserved field, in which case the second ESI in the BA frame may be located in the start sequence number subfield or the slice number subfield in the start sequence control subfield. For example, the second ESI is located in the first 3 bits or the last 3 bits in the slice number subfield.

In the implementation, if the length of the BA Bitmap is variable, for example, the specific length is indicated by three bits in the fragment number subfield, when the first sequence number type indicates the first value, the block acknowledges the bit table subfield. The case where each bit corresponds to the temporary serial number of one MPDU in the A-MPDU Next, the start sequence control subfield includes the start temporary sequence number, since the start sequence control subfield length is 12 bits, and the start temporary sequence number only needs 6 bits, so the start sequence can also be used to control the subfield. The remaining bits carry the second ESI.

Third, in the case where the BA frame contains only one BA Info field, the second ESI may also be located in the block acknowledgement control field of the BA frame, or in the first 11 bits of the per-identity identification information subfield of the BA Info field, because In the case where the BA frame contains only one BA Info field, the first 11 bits of the sub-identification information sub-field are reserved bits.

In the implementation, the A-MPDU sent by the sending end also carries an Ack Policy. When the A-MPDU carries the acknowledgment policy as the BA, the sending end receives the BA frame replied by the receiving end after sending the A-MPDU. Previously, the BAR frame is also sent to the receiving end; the receiving end receives the BAR frame sent by the transmitting end before replying to the BA frame. The time interval between the A-MPDU and the BAR frame is indeterminate, but the time interval between the BAR frame and the BA frame is usually a predefined value.

In the implementation, the first ESI is carried in each MPDU included in the A-MPDU, the first ESI is used to identify the current interaction sequence, the BA frame carries the second ESI, and the second ESI is used to identify the current interaction sequence; Carrying a third ESI, the third ESI is used to identify the current interaction sequence, and the third ESI has the same value as the first ESI and the second ESI, indicating that the A-MPDU, the BAR frame, and the BA frame belong to the same interaction sequence.

In the implementation, the BAR frame further carries a second sequence number type indication, where the second sequence number type indication is used to indicate whether the third ESI is included in the BAR frame.

Specifically, the second sequence number type indication is located in a BAR control domain of the BAR frame, or a block acknowledgement request information field corresponding to the receiving end included in the BAR frame.

In the implementation, the setting manner of the third ESI includes but is not limited to the following methods:

First, the third ESI in the BAR frame is located in the per-stream identification information subfield in the block acknowledgment information field. As shown in FIG. 16, since the TID Value subfield of each flow identification information subfield in the block acknowledgment request information field in the BAR frame is a reserved field, the third ESI may be located in the TID Value subfield.

Specifically, when the second sequence number type indicates that the first value is taken, the starting sequence number subdomain in the BAR Info domain carries the temporary sequence number, and the TID Value subdomain carries the third ESI; When the column number type indicates that the second value is taken, the sequence number carried in the starting sequence number subfield is the serial number, and the TID Value subdomain carries the TID.

Second, the third ESI in the BAR frame is located in the start sequence control subfield in the block acknowledgment information field.

In the implementation, in the case that the length of the BA Bitmap is fixed, and the T-SN corresponding to the first bit is also fixed, for example, the length of the BA Bitmap is always 64 bits, and the T-SN corresponding to the first bit is always zero, in the BAR frame. There is no need to indicate the starting temporary sequence number, that is, the starting sequence number subfield is a reserved field. In this case, the third ESI in the BAR frame may be located in the starting sequence number subfield of the starting sequence control subfield or the fragment number. In the subfield, for example, the third ESI is located in the first 3 bits or the last 3 bits in the fragment number subfield.

Third, in a case where only one BAR Info field is included in the BAR frame, the third ESI may also be located in a Block Confirmation Request Control (BAR Control) field of the BAR frame, or in front of each flow identification information subfield of the BAR Info field. Among the 11 bits, since the BAR frame contains only one BAR Info field, the first 11 bits of the sub-identification information sub-field are reserved bits.

In the implementation, after transmitting the A-MPDU, the transmitting end further receives a BA frame replied by the sending end of the block, where the BA frame includes a block acknowledgment information field corresponding to the transmitting end, where the block acknowledgment information field includes a block acknowledgment bit table. a sub-domain, and the block acknowledgment information field includes a first sequence number type indication, the first sequence number type indicating a temporary for indicating that each bit of the block acknowledgment bit table sub-field corresponds to one MPDU in the A-MPDU The serial number is determined by the transmitting end according to the value of each bit in the sub-field of the block acknowledgment bit table, and whether the MPDU corresponding to the temporary sequence number corresponding to each bit is correctly received.

Specifically, the transmitting end saves the mapping relationship between the T-SN and the SN of each MPDU in the A-MPDU. When the transmitting end receives the BA frame sent by the receiving end, and the first sequence number type included in the receiving end indicates the first value, that is, each bit of the indicating block acknowledgment bit table subfield corresponds to an MPDU in the A-MPDU. In the case of the temporary sequence number, the sender can determine which SNs corresponding to the SN are correctly received by the receiving end according to the T-SN and SN mapping relationship and the value of each bit of the block acknowledgment table subfield. That is, the transmitting end receives the BA frame sent by the receiving end, and each bit of the BA Bitmap included in the BA frame corresponds to one T-SN. Since the transmitting end knows the correspondence relationship between the T-SN and the SN, it can be based on the BA Bitmap. The value of each bit determines which SN corresponding MPDU is connected. The receiving end is correctly received. Note that for the case where the T-SN is carried by the sequence control domain, the transmitting end may not need to save the mapping relationship between the T-SN and the SN, because in this case, the T-SN and SN of the MPDU are the same.

It should be noted that, in the foregoing embodiment, when the UL MU transmission is confirmed, the BA Info may include BA Info for multiple STAs, but not every BA Info uses the T-SN. For example, the UL A-MPDU of a certain STA is a single TID, or the UL A-MPDU is a multi-TID, but the AP only parses the MPDU of one TID. Similarly, when the DL MU transmission mode is confirmed, the BAR frame sent by the AP also has a similar situation, that is, multiple BAR Infos in the BAR frame do not all include the T-SN.

It should be noted that the solution provided by the embodiment of the present invention may be applicable to the acknowledgement of the multi-TID A-MPDU sent by the receiving end to the single STA, and may also be applicable to the multi-TID sent by the receiving end to the multiple STAs in the MU mode. The A-MPDU is acknowledged and can also be applied to the transmission and confirmation of the A-MPDU in which the MPDU and the slice coexist. The MPDU is identified by the serial number, and the MPDU fragment is identified by the <sequence number, fragment number>. In this case, the MPDU and the MPDU fragment can be uniformly numbered by the temporary sequence number. MPDUs and MPDU fragments may be the same TID or different TIDs. In addition, if the MPDUs included in the A-MPDU are sent to different target devices, and the MPDUs included in the A-MPDUs have different TIDs, there may be MPDU fragments, and the solution provided by the embodiment of the present invention may also be used. These MPDUs and MPDU fragments are uniformly numbered.

Based on the same inventive concept, a data transmitting apparatus is further provided in the embodiment of the present invention. For the specific implementation of the apparatus, reference may be made to the description of the sending end in the method part of the foregoing method, and the repeated description is not repeated, as shown in FIG. The device mainly includes:

The configuration module 1501 is configured to separately configure a temporary sequence number of each MPDU included in the A-MPDU, where the A-MPDU includes multiple MPDUs, and the temporary sequence numbers of any two MPDUs included in the A-MPDU are different. The TID of at least two MPDUs in the A-MPDU is different, and/or at least one MPDU includes a fragment;

The sending module 1502 is configured to send the A-MPDU after the configuration module 1501 configures the temporary sequence number.

In an implementation, the configuration module 1501 is specifically configured to: carry a corresponding temporary sequence number in each MPDU included in the A-MPDU; or carry in each MPDU except the first MPDU of the A-MPDU The temporary MCU number does not carry the temporary sequence number, and the temporary sequence number corresponding to the first MPDU is a predefined value.

For the implementation of the temporary sequence number of each MPDU in the A-MPDU, refer to the description of the method embodiment, and details are not described herein.

In the implementation, the A-MPDU also carries a temporary sequence number presence indication, and the temporary sequence number presence indication is used to indicate whether a temporary sequence number exists. For the carrying manner of the temporary sequence number indication indication in the A-MPDU, refer to the description of the method embodiment, and details are not described herein again.

In an implementation, the apparatus further includes a receiving module 1503, configured to receive a BA frame, where the BA frame includes a block acknowledgement information field corresponding to the transmit end, where the block acknowledgement information field includes a block acknowledgement bit table subfield, and the block acknowledgement information The field includes a first sequence number type indication, the first sequence number type indicating a temporary sequence number for indicating that each bit of the block acknowledgement bit table subfield corresponds to one MPDU in the A-MPDU; The processing module 1504 is configured to determine, according to the value of each bit in the block acknowledgment bit table subfield in the BA frame received by the receiving module 1503, whether the MPDU corresponding to the temporary sequence number corresponding to each bit is correctly received.

In an implementation, the processing module 1504 is specifically configured to determine, according to the stored correspondence between the temporary sequence number and the sequence number of each MPDU, and the value of each bit in the block acknowledgment bit table subfield in the BA frame, Whether the MPDU corresponding to the temporary serial number is correctly received.

In the implementation, the block acknowledgment information field in the BA frame further includes a start sequence control subfield, where the start sequence control subfield includes a start temporary sequence number, where the start temporary sequence number is used to indicate in the BA frame. The block confirms the temporary sequence number of the MPDU corresponding to the first bit in the bit table subfield.

For the carrying manner of the first serial number type indication, refer to the description of the method embodiment part, and details are not described herein again.

In the implementation, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where the first ESI is used to identify the current interaction sequence, and the BA frame carries a second interaction sequence identifier ESI, where the second ESI is used. The current interaction sequence is identified, and the second ESI has the same value as the first ESI.

In the implementation, the manner in which the first ESI is carried in the A-MPDU and the manner in which the second ESI is carried in the BA frame may be referred to the description in the method embodiment, and details are not described herein again.

In an implementation, the sending module 1502 is further configured to send a block acknowledge request BAR frame after the receiving module 1503 receives the BA frame after transmitting the A-MPDU.

The third ESI is carried in the BAR frame, and the third ESI is used to identify the current interaction sequence, and the third ESI has the same value as the first ESI. The manner of carrying the third ESI in the BAR frame can be referred to the description in the method embodiment part, and details are not described herein again.

In the implementation, the BAR frame further carries a second sequence number type indication, where the second sequence number type indication is used to indicate whether the third ESI is included in the BAR frame. For the manner of carrying the second sequence number type indication in the BAR frame, refer to the description in the method embodiment part, and details are not described herein again.

Based on the same inventive concept, a data receiving and confirming device is further provided in the embodiment of the present invention. For the specific implementation of the device, refer to the description of the method embodiment, and the repeated description is not repeated. As shown in FIG. 18, the device is mainly include:

The receiving module 1601 is configured to receive an A-MPDU sent by the sending end, where each MPDU included in the A-MPDU is configured with a corresponding temporary sequence number, where the A-MPDU includes multiple MPDUs, and the A-MPDU includes The temporary sequence numbers of any two MPDUs are different, wherein the stream identifiers TID of at least two MPDUs in the A-MPDU are different, and/or at least one MPDU includes a fragment;

The sending module 1602 is configured to send a block acknowledgement BA frame, where the BA frame includes a block acknowledgement information field corresponding to the transmit end, where the block acknowledgement information field includes a block acknowledgement bit table subfield, and the block acknowledgement information field includes a A sequence number type indication, the first sequence number type indicating a temporary sequence number for indicating that each bit of the block acknowledgment bit table subfield corresponds to an MPDU in the A-MPDU.

In the implementation, each MPDU included in the A-MPDU is configured with a corresponding temporary sequence number, specifically: each MPDU included in the A-MPDU carries a corresponding temporary sequence number; or, except for the first A-MPDU Each MPDU other than the MPDU carries a temporary sequence number. The first MPDU does not carry a temporary sequence number, and the temporary sequence number corresponding to the first MPDU is a predefined value.

In the implementation, the A-MPDU also carries a temporary sequence number presence indication, and the temporary sequence number presence indication is used to indicate whether a temporary sequence number exists. For the manner in which the temporary sequence number existence indication is carried in the A-MPDU, refer to the description of the method part, and details are not described herein again.

In an implementation, the block acknowledgement information field of the BA frame further includes a start sequence control subfield, where the start sequence control subfield includes a start temporary sequence number, where the start temporary sequence number is used to indicate a block acknowledgement bit of the BA frame. The temporary sequence number of the MPDU corresponding to the first bit in the table subfield.

In the implementation, the manner of carrying the first sequence number type indication in the BA frame can be referred to the description of the method part, and details are not described herein again.

In the implementation, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where the first ESI is used to identify the current interaction sequence. The BA frame carries a second interaction sequence identifier ESI, the second ESI is used to identify the current interaction sequence, and the second ESI has the same value as the first ESI.

For the manner in which the first ESI is carried in the A-MPDU and the manner in which the second ESI is carried in the BA frame, refer to the description in the method embodiment, and details are not described herein again.

In implementation, the receiving module 1601 is further configured to:

After receiving the A-MPDU, before the sending module 1602 sends the BA frame, it receives the block acknowledgement request BAR frame sent by the transmitting end.

In the implementation, the third ESI is carried in the BAR frame, and the third ESI is used to identify the current interaction sequence, and the third ESI has the same value as the first ESI and the second ESI.

For the implementation of the method for carrying the third ESI in the BAR frame, refer to the description in the method embodiment, and details are not described herein again.

In the implementation, the BAR frame further carries a second sequence number type indication, where the second sequence number type indication is used to indicate whether the third ESI is included in the BAR frame. For the manner of carrying the second sequence number type indication in the BAR frame, refer to the description in the method embodiment, and details are not described herein again.

Based on the same inventive concept, a device is also provided in the embodiment of the present invention. For the specific implementation of the device, refer to the description of the sending end in the foregoing method embodiment, and the repeated description is not repeated, such as As shown in FIG. 19, the device mainly includes a processor 1701, a memory 1702, and a transceiver 1703. The transceiver 1703 receives and transmits data under the control of the processor 1701. The memory 1702 stores a preset program, and the processor 1701 The program in the memory 1702 is read, and the following process is executed in accordance with the program:

Configuring a temporary sequence number of each MPDU included in the A-MPDU, where the A-MPDU includes multiple MPDUs, and the temporary sequence numbers of any two MPDUs included in the A-MPDU are different, where the A-MPDU is in the A-MPDU. At least two MPDUs have different TIDs, and/or at least one MPDU includes fragments;

The A-MPDU after configuring the temporary sequence number is transmitted through the transceiver 1703.

In an implementation, the processor 1701 is specifically configured to: carry a corresponding temporary sequence number in each MPDU included in the A-MPDU; or carry in each MPDU except the first MPDU of the A-MPDU The temporary MCU number does not carry the temporary sequence number, and the temporary sequence number corresponding to the first MPDU is a predefined value.

In an implementation, the processor 1701 is configured to receive, by the transceiver 1703, a BA frame, where the BA frame includes a block acknowledgement information field corresponding to the transmit end, where the block acknowledgement information field includes a block acknowledgement bit table subfield, and the block acknowledgement information field Included in the first sequence number type indication, the first sequence number type indication is used to indicate that each bit of the block acknowledgment bit table subfield corresponds to a temporary sequence number of one MPDU in the A-MPDU; The block in the BA frame confirms the value of each bit in the bit table sub-field, and determines whether the MPDU corresponding to the temporary sequence number corresponding to each bit is correctly received.

In an implementation, the processor 1701 is specifically configured to determine, according to the stored correspondence between the temporary sequence number and the sequence number of each MPDU, and the value of each bit in the block acknowledgment bit table subfield in the BA frame, Whether the MPDU corresponding to the temporary serial number is correctly received.

In implementation, the processor 1701 instructs the transceiver 1703 to send a block acknowledgment request BAR frame before receiving the BA frame after transmitting the A-MPDU.

Another device is provided in the embodiment of the present invention. For the specific implementation of the device, refer to the description of the receiving end in the foregoing method embodiment, and the repeated description is not repeated, as shown in FIG. 20, the device is shown in FIG. It mainly includes a processor 1801, a memory 1802, and a transceiver 1803. The transceiver 1803 receives and transmits data under the control of the processor 1801. The memory 1802 stores a preset program, and the processor 1801 reads the program in the memory 1802. Follow the procedure to perform the following process:

Receiving, by the transceiver 1803, an A-MPDU sent by the sending end, where each MPDU included in the A-MPDU is configured with a corresponding temporary sequence number, where the A-MPDU includes multiple MPDUs, and any two of the A-MPDUs are included. The temporary sequence numbers of the MPDUs are different, where the A-MPDU The stream identifier TID of at least two MPDUs is different, and/or at least one MPDU includes a fragment;

Transmitting, by the transceiver 1803, a block acknowledgement BA frame, where the BA frame includes a block acknowledgement information field corresponding to the transmit end, where the block acknowledgement information field includes a block acknowledgement bit table subfield, and the block acknowledgement information field includes the first sequence The number type indicates that the first sequence number type indicates a temporary sequence number for indicating that each bit of the block acknowledgment bit table subfield corresponds to one MPDU in the A-MPDU.

In implementation, the processor 1801 instructs the transceiver 1803 to send the BA after receiving the A-MPDU. Before the frame, the block acknowledges the requesting BAR frame sent by the transmitting end.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. To implement the functions specified in one or more blocks of a flow or a flow and/or block diagram of a flowchart Device.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

Claims

A data sending method, comprising:

The sending end respectively configures a temporary sequence number of each medium access control protocol data unit MPDU included in the aggregated medium access control protocol data unit A-MPDU, and the temporary serial number of any two MPDUs included in the A-MPDU is not The same, wherein the flow identifiers TID of at least two MPDUs in the A-MPDU are different, and/or at least one MPDU includes a fragment;

The sending end sends the A-MPDU after configuring the temporary sequence number.
The method according to claim 1, wherein the transmitting end respectively configures a temporary sequence number of each medium access control protocol data unit MPDU included in the aggregated medium access control protocol data unit A-MPDU, including:

The transmitting end carries a corresponding temporary serial number in each MPDU included in the A-MPDU; or

The transmitting end carries a corresponding temporary sequence number in each MPDU except the first MPDU of the A-MPDU, where the first MPDU does not carry a temporary sequence number, and the first MPDU The corresponding temporary serial number is a predefined value.
The method according to claim 2, wherein the temporary sequence number is located in a medium access control MAC header of the MPDU, or in an MPDU delimiter of the MPDU, or a counter located in the MPDU The mode cipher block chain message authentication code protocol is in the CCMP header.
The method according to claim 3, wherein the temporary sequence number is located in a high efficiency HE control field in a MAC header of the MPDU, or in a quality of service QoS control field in a MAC header of the MPDU, or Located in the frame control domain in the MAC header of the MPDU, or in the sequence control domain in the MAC header of the MPDU.
The method according to any one of claims 1-4, wherein the A-MPDU further carries a temporary sequence number presence indication, and the temporary sequence number presence indication is used to indicate whether the temporary sequence number exists.
The method of claim 5 wherein said temporary serial number presence indicator bit In the physical header of the A-MPDU; or,

The temporary sequence number presence indication is located in an MPDU delimiter corresponding to each MPDU included in the A-MPDU; or

The temporary sequence number presence indication is located in a media access control MAC header of each MPDU included in the A-MPDU; or

The temporary sequence number presence indication is located in a CCMP header of each MPDU included in the A-MPDU.
The method according to claim 6, wherein the temporary sequence number exists to indicate a high efficiency HE control domain located in a MAC header of the MPDU, or a quality of service QoS control domain located in a MAC header of the MPDU Or in the frame control field in the MAC header of the MPDU.
The method according to any one of claims 1 to 7, wherein each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, and the first ESI is used to identify a current interaction sequence. .
The method according to claim 8, wherein the first ESI is located in a frame control domain of each MPDU in the A-MPDU, or in a quality of service QoS control domain of each MPDU in the A-MPDU. Or a high efficiency HE control field located in each of the MPDUs in the A-MPDU, or located in an MPDU delimiter corresponding to each of the MPDUs in the A-MPDU, or located in the A-MPDU Physical layer in the PHY header.
The method according to any one of claims 1 to 7, wherein after the sending end sends the A-MPDU after configuring the temporary sequence number, the method further includes:

The transmitting end receives a block acknowledgement BA frame, where the BA frame includes a block acknowledgement information field corresponding to the sender, the block acknowledgement information field includes a block acknowledgement bit table subfield, and the block acknowledgement information domain Included in the first sequence number type indication, the first sequence number type indication is used to indicate that each bit of the block acknowledgment bit table subfield corresponds to a temporary sequence number of one MPDU in the A-MPDU;

The transmitting end determines the ratio of each bit according to the value of each bit in the block acknowledgment bit table subfield Whether the MPDU corresponding to the temporary serial number corresponding to the special is correctly received.
The method according to claim 10, wherein the transmitting end determines whether the MPDU corresponding to the temporary sequence number corresponding to each bit is correct according to the value of each bit in the block acknowledgment bit table subfield. Receive, including:

Determining, by the sending end, the temporary sequence corresponding to each bit according to the stored correspondence between the temporary sequence number of each MPDU and the sequence number and the value of each bit in the block acknowledgment bit table subfield Whether the corresponding MPDU of the number is received correctly.
The method according to claim 10, wherein said block acknowledgment information field further comprises a start sequence control subfield, said start sequence control subfield including a start temporary sequence number, said start temporary The sequence number is used to indicate the temporary sequence number of the MPDU corresponding to the first bit in the block acknowledgement bit table subfield.
The method according to claim 12, wherein the first sequence number type indication is located in a fragment number subfield of the start sequence control subfield, or is located in the block acknowledgement information field. Each stream identifies the information subfield, or is located in the block acknowledgement control field of the BA frame.
The method according to claim 13, wherein the per-flow identification information sub-domain includes a flow identifier, and the first serial number type indication is located in a per-flow identification information sub-domain in the block acknowledgement information field. The method includes: the first sequence number type is indicated as the flow identifier, and when the flow identifier is a predefined value, indicating that the start sequence control subfield in the block acknowledgement information field includes an initial temporary sequence number .
The method according to any one of claims 10 to 14, wherein each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, and the first ESI is used to identify a current interaction sequence. ;

The BA frame carries a second interaction sequence identifier ESI, the second ESI is used to identify a current interaction sequence, and the second ESI is the same as the value of the first ESI.
The method according to claim 15, wherein said second ESI is located in each stream identification information subfield in said block acknowledgment information field, or is located in said block acknowledgment information field. Subdomain.
The method of claim 15 wherein said second ESI is located in a block acknowledgement control field of said BA frame.
The method according to any one of claims 10 to 14, wherein after the transmitting end sends the A-MPDU, before the receiving the BA frame, the method further includes:

The transmitting end sends a block acknowledge request BAR frame.
The method according to claim 18, wherein each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, and the first ESI is used to identify a current interaction sequence;

The third ESI is carried in the BAR frame, and the third ESI is used to identify a current interaction sequence, and the third ESI is the same as the value of the first ESI.
The method according to claim 19, wherein the BAR frame includes a block acknowledgment request information field corresponding to the receiving end, and the third ESI is located in each of the block acknowledgment request information fields. The domain or block acknowledgment request start sequence number controls the subfield.
The method according to claim 19, wherein the BAR frame includes a BAR control domain, and the third ESI is located in the BAR control domain.
The method according to any one of claims 19 to 21, wherein the BAR frame further carries a second sequence number type indication, and the second sequence number type indication is used to indicate whether the BAR frame is included The third ESI.
The method according to claim 22, wherein the second sequence number type indication is located in a BAR control field of the BAR frame, or a block acknowledgment request corresponding to a receiving end included in the BAR frame Information domain.
A data receiving confirmation method, comprising:

The receiving end receives the aggregated medium access control protocol data unit A-MPDU sent by the sending end, and each medium access control protocol data unit MPDU included in the A-MPDU is respectively configured with a corresponding temporary serial number, where the A- The temporary sequence numbers of any two MPDUs included in the MPDU are different. The flow identifiers TID of at least two MPDUs in the A-MPDU are different, and/or at least one MPDU includes a fragment.

The receiving end sends a block acknowledgement BA frame, where the BA frame includes a block acknowledgement information field corresponding to the sending end, the block acknowledgement information field includes a block acknowledgement bit table subfield, and the block acknowledgement information domain The first sequence number type indication is included, and the first sequence number type indication is used to indicate that each bit of the block acknowledgement bit table subfield corresponds to a temporary sequence number of one MPDU in the A-MPDU.
The method according to claim 24, wherein each of the media access control protocol data units MPDUs included in the A-MPDU is respectively configured with a corresponding temporary sequence number, specifically:

Each MPDU included in the A-MPDU carries a corresponding temporary serial number; or

Each MPDU except the first MPDU of the A-MPDU carries a temporary sequence number, the first MPDU does not carry a temporary sequence number, and the temporary sequence number corresponding to the first MPDU is pre- Define the value.
The method according to claim 25, wherein the temporary sequence number is located in a medium access control MAC header of the MPDU, or in an MPDU delimiter of the MPDU, or is located in a CCMP of the MPDU. In the head.
The method according to claim 26, wherein the temporary sequence number is located in a high efficiency HE control field in a MAC header of the MPDU, or in a quality of service QoS control field in a MAC header of the MPDU, or Located in the frame control domain in the MAC header of the MPDU, or in the sequence control domain in the MAC header of the MPDU.
The method according to any one of claims 24 to 27, wherein the A-MPDU further carries a temporary sequence number presence indication, and the temporary sequence number presence indication is used to indicate whether the temporary sequence number exists.
The method of claim 28, wherein the temporary sequence number presence indication is located in a physical header of the A-MPDU; or

The temporary sequence number presence indication is located in an MPDU delimiter corresponding to each MPDU included in the A-MPDU; or

The temporary sequence number presence indicates a media connection located in each MPDU included in the A-MPDU Into the control MAC header; or,

The temporary sequence number presence indication is located in a CCMP header of each MPDU included in the A-MPDU.
The method according to claim 29, wherein the temporary sequence number exists to indicate a high efficiency HE control domain located in a MAC header of the MPDU, or a quality of service QoS control domain located in a MAC header of the MPDU Or in the frame control field in the MAC header of the MPDU.
The method according to any one of claims 24 to 30, wherein each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, and the first ESI is used to identify a current interaction sequence. .
The method according to claim 31, wherein the first ESI is located in a frame control domain of each MPDU in the A-MPDU, or in a quality of service QoS control domain of each MPDU in the A-MPDU. Or a high efficiency HE control field located in each of the MPDUs in the A-MPDU, or located in an MPDU delimiter corresponding to each of the MPDUs in the A-MPDU, or located in the A-MPDU Physical layer in the PHY header.
The method according to any one of claims 24 to 30, wherein the block acknowledgment information field further comprises a start sequence control subfield, and the start sequence control subfield includes an initial temporary sequence number, The initial temporary sequence number is used to indicate a temporary sequence number of the MPDU corresponding to the first bit in the block acknowledgement bit table subfield.
The method according to claim 33, wherein said first sequence number type indication is located in a slice number subfield of said start sequence control subfield, or is located in said block acknowledgement information field. Each stream identifies the information subfield, or is located in the block acknowledgement control field of the BA frame.
The method according to claim 34, wherein said per-stream identification information sub-field includes a flow identifier, said first sequence number type indicating located in each flow identification information sub-domain in said block acknowledgement information field The method includes: the first sequence number type is indicated as the flow identifier, and when the flow identifier is a predefined value, indicating that the start sequence control subfield in the block acknowledgement information field includes an initial temporary sequence number .
The method according to claim 33 or claim 35, wherein each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, and the first ESI is used to identify a current interaction sequence;

The second ESI is used to identify the current interaction sequence, and the second ESI is the same as the value of the first ESI.
The method according to claim 36, wherein said second ESI is located in each stream identification information subfield in said block acknowledgment information field, or is located in said block acknowledgment information field. Subdomain.
The method of claim 36 wherein said second ESI is located in a block acknowledgement control field of said BA frame.
The method according to claim 24, wherein the method further comprises: after the receiving end receives the A-MPDU, and before sending the BA frame, the method further includes:

The receiving end receives a block acknowledgement request BAR frame sent by the sending end.
The method according to claim 39, wherein each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, and the first ESI is used to identify a current interaction sequence;

The BA frame carries a second interaction sequence identifier ESI, where the second ESI is used to identify a current interaction sequence;

The third ESI is carried in the BAR frame, and the third ESI is used to identify a current interaction sequence, and the third ESI has the same value as the first ESI and the second ESI.
The method according to claim 40, wherein the BAR frame includes a block acknowledgment request information field corresponding to the receiving end, and the third ESI is located in each of the block acknowledgment request information fields. The domain or block acknowledgment request start sequence number controls the subfield.
The method according to claim 40, wherein the BAR frame includes a BAR control field, and the third ESI is located in the BAR control field.
The method according to any one of claims 40 to 42, wherein the BAR frame further carries a second sequence number type indication, and the second sequence number type indication is used to indicate the BAR frame. Whether the third ESI is included in the middle.
The method according to claim 43, wherein the second sequence number type indication is located in a BAR control field of the BAR frame, or a block acknowledgment request corresponding to a receiving end included in the BAR frame Information domain.
A data transmitting device, comprising:

a configuration module, configured to separately configure a temporary sequence number of each medium access control protocol data unit MPDU included in the aggregated medium access control protocol data unit A-MPDU, and temporarily install any two MPDUs included in the A-MPDU The sequence identifiers are different, wherein the stream identifiers TID of at least two MPDUs in the A-MPDU are different, and/or at least one MPDU includes a fragment;

And a sending module, configured to send the A-MPDU after the configuration module configures the temporary serial number.
The device according to claim 45, wherein the configuration module is specifically configured to:

Each MPDU included in the A-MPDU carries a corresponding temporary serial number; or

Each MPDU except the first MPDU of the A-MPDU carries a corresponding temporary sequence number, where the first MPDU does not carry a temporary sequence number, and the temporary sequence corresponding to the first MPDU The number is a predefined value.
The apparatus according to claim 46, wherein the temporary sequence number is located in a medium access control MAC header of the MPDU, or in an MPDU delimiter of the MPDU, or is located in a CCMP of the MPDU. In the head.
The apparatus according to claim 47, wherein the temporary sequence number is located in a high efficiency HE control field in a MAC header of the MPDU, or in a quality of service QoS control field in a MAC header of the MPDU, or Located in the frame control domain in the MAC header of the MPDU, or in the sequence control domain in the MAC header of the MPDU.
The device according to any one of claims 45 to 48, wherein the A-MPDU further carries a temporary sequence number presence indication, and the temporary sequence number presence indication is used to indicate whether the temporary sequence number exists.
The apparatus according to claim 49, wherein said temporary sequence number presence indication is located in a physical header of said A-MPDU; or

The temporary sequence number presence indication is located in an MPDU delimiter corresponding to each MPDU included in the A-MPDU; or

The temporary sequence number presence indication is located in a media access control MAC header of each MPDU included in the A-MPDU; or

The temporary sequence number presence indication is located in a CCMP header of each MPDU included in the A-MPDU.
The apparatus according to claim 50, wherein said temporary sequence number exists to indicate a high efficiency HE control field located in a MAC header of said MPDU, or a quality of service QoS control field located in a MAC header of said MPDU Or in the frame control field in the MAC header of the MPDU.
The device according to any one of claims 45-51, wherein each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, and the first ESI is used to identify a current interaction sequence. .
The apparatus according to claim 52, wherein said first ESI is located in a frame control domain of each MPDU in said A-MPDU, or in a quality of service QoS control domain of each MPDU in said A-MPDU Or a high efficiency HE control field located in each of the MPDUs in the A-MPDU, or located in an MPDU delimiter corresponding to each of the MPDUs in the A-MPDU, or located in the A-MPDU Physical layer in the PHY header.
The apparatus of any of claims 45-51, further comprising a receiving module for:

Receiving a block acknowledgement BA frame, where the BA frame includes a block acknowledgement information field corresponding to the transmitting end, the block acknowledgement information field includes a block acknowledgement bit table subfield, and the block acknowledgement information field includes a first a sequence number type indication, where the first sequence number type indication is used to indicate that each bit of the block acknowledgement bit table subfield corresponds to a temporary sequence number of one MPDU in the A-MPDU;

Also included is a processing module for:

Determining, according to the value of each bit in the block acknowledgment bit table subfield in the BA frame received by the receiving module, whether the MPDU corresponding to the temporary sequence number corresponding to each bit is correctly received.
The device according to claim 54, wherein the processing module is specifically configured to:

Determining the MPDU corresponding to the temporary sequence number corresponding to each bit according to the stored correspondence between the temporary sequence number of the MPDU and the sequence number and the value of each bit in the block acknowledgment bit table subfield Is it received correctly?
The apparatus according to claim 54, wherein said block acknowledgment information field further comprises a start sequence control subfield, said start sequence control subfield including a start temporary sequence number, said start temporary The sequence number is used to indicate the temporary sequence number of the MPDU corresponding to the first bit in the block acknowledgement bit table subfield.
The apparatus according to claim 56, wherein said first sequence number type indication is located in a fragment number subfield of said start sequence control subfield, or is located in said block acknowledgement information field. Each stream identifies the information subfield, or is located in the block acknowledgement control field of the BA frame.
The method according to claim 57, wherein said per-stream identification information sub-field includes a flow identifier, said first sequence number type indicating located in each flow identification information sub-domain in said block acknowledgement information field The method includes: the first sequence number type is indicated as the flow identifier, and when the flow identifier is a predefined value, indicating that the start sequence control subfield in the block acknowledgement information field includes an initial temporary sequence number .
The device according to any one of claims 54-58, wherein each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, and the first ESI is used to identify a current interaction sequence. ;

The BA frame carries a second interaction sequence identifier ESI, the second ESI is used to identify a current interaction sequence, and the second ESI is the same as the value of the first ESI.
The apparatus according to claim 59, wherein said second ESI is located in each stream identification information subfield in said block acknowledgment information field, or is located in said block acknowledgment information field Subdomain.
The apparatus of claim 59, wherein the second ESI is located in a block acknowledgement control field of the BA frame.
Apparatus according to any of claims 54-58, wherein said transmitting module further Used for:

After transmitting the A-MPDU, before receiving the BA frame, the receiving module sends a block acknowledge request BAR frame.
The apparatus according to claim 62, wherein each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, and the first ESI is used to identify a current interaction sequence;

The third ESI is carried in the BAR frame, and the third ESI is used to identify a current interaction sequence, and the third ESI is the same as the value of the first ESI.
The device according to claim 62, wherein the BAR frame includes a block acknowledgement request information field corresponding to the receiving end, and the third ESI is located in each of the block identification request information fields. The domain or block acknowledgment request start sequence number controls the subfield.
The apparatus according to claim 62, wherein the BAR frame includes a BAR control domain, and the third ESI is located in the BAR control domain.
The device according to any one of claims 62-65, wherein the BAR frame further carries a second sequence number type indication, and the second sequence number type indication is used to indicate whether the BAR frame is included The third ESI.
The apparatus according to claim 66, wherein said second sequence number type indication is located in a BAR control field of said BAR frame, or a block acknowledgment request corresponding to a receiving end included in said BAR frame Information domain.
A data receiving and confirming device, comprising:

a receiving module, configured to receive an aggregated medium access control protocol data unit A-MPDU sent by the sending end, where each medium access control protocol data unit MPDU included in the A-MPDU is respectively configured with a corresponding temporary serial number, The temporary sequence numbers of any two MPDUs included in the A-MPDU are different, wherein the stream identifiers TID of at least two MPDUs in the A-MPDU are different, and/or at least one MPDU includes fragments. ;

a sending module, configured to send a block acknowledgement BA frame, where the BA frame includes a block acknowledgement information field corresponding to the sender, where the block acknowledgement information field includes a block acknowledgement bit table subfield, and the block acknowledges The information field includes a first sequence number type indication, and the first sequence number type indication is used to indicate that each bit of the block acknowledgement bit table subfield corresponds to a temporary sequence number of one MPDU in the A-MPDU.
The device according to claim 68, wherein each of the media access control protocol data units MPDUs included in the A-MPDU is respectively configured with a corresponding temporary sequence number, specifically:

Each MPDU included in the A-MPDU carries a corresponding temporary serial number; or

Each MPDU except the first MPDU of the A-MPDU carries a temporary sequence number, the first MPDU does not carry a temporary sequence number, and the temporary sequence number corresponding to the first MPDU is pre- Define the value.
The apparatus according to claim 69, wherein the temporary sequence number is located in a medium access control MAC header of the MPDU, or in an MPDU delimiter of the MPDU, or is located in a CCMP of the MPDU. In the head.
The apparatus according to claim 70, wherein the temporary sequence number is located in a high efficiency HE control field in a MAC header of the MPDU, or in a quality of service QoS control field in a MAC header of the MPDU, or Located in the frame control domain in the MAC header of the MPDU, or in the sequence control domain in the MAC header of the MPDU.
The device according to any one of claims 68-71, wherein the A-MPDU further carries a temporary sequence number presence indication, and the temporary sequence number presence indication is used to indicate whether the temporary sequence number exists.
The apparatus according to claim 72, wherein said temporary sequence number presence indication is located in a physical header of said A-MPDU; or

The temporary sequence number presence indication is located in an MPDU delimiter corresponding to each MPDU included in the A-MPDU; or

The temporary sequence number presence indication is located in a media access control MAC header of each MPDU included in the A-MPDU; or

The temporary sequence number presence indicates CCMP located in each MPDU included in the A-MPDU In the head.
The apparatus according to claim 73, wherein the temporary sequence number exists to indicate a high efficiency HE control domain located in a MAC header of the MPDU, or a quality of service QoS control domain located in a MAC header of the MPDU Or in the frame control field in the MAC header of the MPDU.
The device according to any one of claims 68-74, wherein each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, and the first ESI is used to identify a current interaction sequence. .
The apparatus according to claim 75, wherein said first ESI is located in a frame control domain of each MPDU in said A-MPDU, or in a quality of service QoS control domain of each MPDU in said A-MPDU Or a high efficiency HE control field located in each of the MPDUs in the A-MPDU, or located in an MPDU delimiter corresponding to each of the MPDUs in the A-MPDU, or located in the A-MPDU Physical layer in the PHY header.
The apparatus according to any one of claims 68-74, wherein the block acknowledgment information field further comprises a start sequence control subfield, and the start sequence control subfield includes an initial temporary sequence number, The initial temporary sequence number is used to indicate a temporary sequence number of the MPDU corresponding to the first bit in the block acknowledgement bit table subfield.
The apparatus according to claim 77, wherein said first sequence number type indication is located in a slice number subfield of said start sequence control subfield, or is located in said block acknowledgement information field. Each stream identifies the information subfield, or is located in the block acknowledgement control field of the BA frame.
The method according to claim 78, wherein said per-stream identification information sub-field includes a flow identifier, said first sequence number type indicating located in each flow identification information sub-domain in said block acknowledgement information field The method includes: the first sequence number type is indicated as the flow identifier, and when the flow identifier is a predefined value, indicating that the start sequence control subfield in the block acknowledgement information field includes an initial temporary sequence number .
The apparatus according to claim 77 or 79, wherein each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, and the first ESI is used to identify the current Interaction sequence

The second ESI is used to identify the current interaction sequence, and the second ESI is the same as the value of the first ESI.
The apparatus according to claim 80, wherein said second ESI is located in each stream identification information subfield in said block acknowledgment information field, or is located in said block acknowledgment information field. Subdomain.
80. The apparatus of claim 80, wherein the second ESI is located in a block acknowledgement control field of the BA frame.
The device of claim 80, wherein the receiving module is further configured to:

After receiving the A-MPDU, before the sending module sends the BA frame, receiving a block acknowledgement request BAR frame sent by the sending end.
The apparatus according to claim 83, wherein each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, and the first ESI is used to identify a current interaction sequence;

The BA frame carries a second interaction sequence identifier ESI, where the second ESI is used to identify a current interaction sequence;

The third ESI is carried in the BAR frame, and the third ESI is used to identify a current interaction sequence, and the third ESI has the same value as the first ESI and the second ESI.
The apparatus according to claim 84, wherein said BAR frame includes a block acknowledgment request information field corresponding to a receiving end, and said third ESI is located in each of said stream acknowledgment request information fields The domain or block acknowledgment request start sequence number controls the subfield.
The apparatus according to claim 84, wherein said BAR frame includes a BAR control field, and said third ESI is located in said BAR control field.
The device according to any one of claims 84 to 86, wherein the BAR frame further carries a second sequence number type indication, and the second sequence number type indication is used to indicate whether the BAR frame is included The third ESI.
The apparatus of claim 87, wherein said second serial number type indication Located in the BAR control domain of the BAR frame, or in a block acknowledgement request information field corresponding to the receiving end included in the BAR frame.